diff options
Diffstat (limited to 'libstdc++-v3/include/bits/stl_uninitialized.h')
| -rw-r--r-- | libstdc++-v3/include/bits/stl_uninitialized.h | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/libstdc++-v3/include/bits/stl_uninitialized.h b/libstdc++-v3/include/bits/stl_uninitialized.h index 6cfba13cb93..ef2e584c1b3 100644 --- a/libstdc++-v3/include/bits/stl_uninitialized.h +++ b/libstdc++-v3/include/bits/stl_uninitialized.h @@ -56,6 +56,14 @@ #ifndef _STL_UNINITIALIZED_H #define _STL_UNINITIALIZED_H 1 +#if __cplusplus > 201402L +#include <utility> +#endif + +#if __cplusplus >= 201103L +#include <type_traits> +#endif + namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION @@ -636,6 +644,100 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION allocator<_Tp>&) { return std::__uninitialized_default_n(__first, __n); } + template<bool _TrivialValueType> + struct __uninitialized_default_novalue_1 + { + template<typename _ForwardIterator> + static void + __uninit_default_novalue(_ForwardIterator __first, + _ForwardIterator __last) + { + _ForwardIterator __cur = __first; + __try + { + for (; __cur != __last; ++__cur) + std::_Construct_novalue(std::__addressof(*__cur)); + } + __catch(...) + { + std::_Destroy(__first, __cur); + __throw_exception_again; + } + } + }; + + template<> + struct __uninitialized_default_novalue_1<true> + { + template<typename _ForwardIterator> + static void + __uninit_default_novalue(_ForwardIterator __first, + _ForwardIterator __last) + { + } + }; + + template<bool _TrivialValueType> + struct __uninitialized_default_novalue_n_1 + { + template<typename _ForwardIterator, typename _Size> + static _ForwardIterator + __uninit_default_novalue_n(_ForwardIterator __first, _Size __n) + { + _ForwardIterator __cur = __first; + __try + { + for (; __n > 0; --__n, ++__cur) + std::_Construct_novalue(std::__addressof(*__cur)); + return __cur; + } + __catch(...) + { + std::_Destroy(__first, __cur); + __throw_exception_again; + } + } + }; + + template<> + struct __uninitialized_default_novalue_n_1<true> + { + template<typename _ForwardIterator, typename _Size> + static _ForwardIterator + __uninit_default_novalue_n(_ForwardIterator __first, _Size __n) + { + } + }; + + // __uninitialized_default_novalue + // Fills [first, last) with std::distance(first, last) default-initialized + // value_types(s). + template<typename _ForwardIterator> + inline void + __uninitialized_default_novalue(_ForwardIterator __first, + _ForwardIterator __last) + { + typedef typename iterator_traits<_ForwardIterator>::value_type + _ValueType; + + std::__uninitialized_default_novalue_1< + is_trivially_default_constructible<_ValueType>::value>:: + __uninit_default_novalue(__first, __last); + } + + // __uninitialized_default_n + // Fills [first, first + n) with n default-initialized value_type(s). + template<typename _ForwardIterator, typename _Size> + inline _ForwardIterator + __uninitialized_default_novalue_n(_ForwardIterator __first, _Size __n) + { + typedef typename iterator_traits<_ForwardIterator>::value_type + _ValueType; + + return __uninitialized_default_novalue_n_1< + is_trivially_default_constructible<_ValueType>::value>:: + __uninit_default_novalue_n(__first, __n); + } template<typename _InputIterator, typename _Size, typename _ForwardIterator> @@ -665,6 +767,38 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION random_access_iterator_tag) { return std::uninitialized_copy(__first, __first + __n, __result); } + template<typename _InputIterator, typename _Size, + typename _ForwardIterator> + pair<_InputIterator, _ForwardIterator> + __uninitialized_copy_n_pair(_InputIterator __first, _Size __n, + _ForwardIterator __result, input_iterator_tag) + { + _ForwardIterator __cur = __result; + __try + { + for (; __n > 0; --__n, ++__first, ++__cur) + std::_Construct(std::__addressof(*__cur), *__first); + return {__first, __cur}; + } + __catch(...) + { + std::_Destroy(__result, __cur); + __throw_exception_again; + } + } + + template<typename _RandomAccessIterator, typename _Size, + typename _ForwardIterator> + inline pair<_RandomAccessIterator, _ForwardIterator> + __uninitialized_copy_n_pair(_RandomAccessIterator __first, _Size __n, + _ForwardIterator __result, + random_access_iterator_tag) + { + auto __second_res = uninitialized_copy(__first, __first + __n, __result); + auto __first_res = std::next(__first, __n); + return {__first_res, __second_res}; + } + /** * @brief Copies the range [first,first+n) into result. * @param __first An input iterator. @@ -680,8 +814,95 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION _ForwardIterator __result) { return std::__uninitialized_copy_n(__first, __n, __result, std::__iterator_category(__first)); } + + template<typename _InputIterator, typename _Size, typename _ForwardIterator> + inline pair<_InputIterator, _ForwardIterator> + __uninitialized_copy_n_pair(_InputIterator __first, _Size __n, + _ForwardIterator __result) + { + return + std::__uninitialized_copy_n_pair(__first, __n, __result, + std::__iterator_category(__first)); + } + +#endif + +#if __cplusplus > 201402L + template <typename _ForwardIterator> + inline void + uninitialized_default_construct(_ForwardIterator __first, + _ForwardIterator __last) + { + __uninitialized_default_novalue(__first, __last); + } + + template <typename _ForwardIterator, typename _Size> + inline _ForwardIterator + uninitialized_default_construct_n(_ForwardIterator __first, _Size __count) + { + return __uninitialized_default_novalue_n(__first, __count); + } + + template <typename _ForwardIterator> + inline void + uninitialized_value_construct(_ForwardIterator __first, + _ForwardIterator __last) + { + return __uninitialized_default(__first, __last); + } + + template <typename _ForwardIterator, typename _Size> + inline _ForwardIterator + uninitialized_value_construct_n(_ForwardIterator __first, _Size __count) + { + return __uninitialized_default_n(__first, __count); + } + + template <typename _InputIterator, typename _ForwardIterator> + inline _ForwardIterator + uninitialized_move(_InputIterator __first, _InputIterator __last, + _ForwardIterator __result) + { + return std::uninitialized_copy + (_GLIBCXX_MAKE_MOVE_ITERATOR(__first), + _GLIBCXX_MAKE_MOVE_ITERATOR(__last), __result); + } + + template <typename _InputIterator, typename _Size, typename _ForwardIterator> + inline pair<_InputIterator, _ForwardIterator> + uninitialized_move_n(_InputIterator __first, _Size __count, + _ForwardIterator __result) + { + auto __res = std::__uninitialized_copy_n_pair + (_GLIBCXX_MAKE_MOVE_ITERATOR(__first), + __count, __result); + return {__res.first.base(), __res.second}; + } + + template <typename _Tp> + inline void + destroy_at(_Tp* __location) + { + std::_Destroy(__location); + } + + template <typename _ForwardIterator> + inline void + destroy(_ForwardIterator __first, _ForwardIterator __last) + { + std::_Destroy(__first, __last); + } + + template <typename _ForwardIterator, typename _Size> + inline _ForwardIterator + destroy_n(_ForwardIterator __first, _Size __count) + { + return std::_Destroy_n(__first, __count); + } + #endif + _GLIBCXX_END_NAMESPACE_VERSION } // namespace |