// -*- C++ -*- //===----------------------------------------------------------------------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// #ifndef _LIBCPP_STACK #define _LIBCPP_STACK /* stack synopsis namespace std { template <class T, class Container = deque<T>> class stack { public: typedef Container container_type; typedef typename container_type::value_type value_type; typedef typename container_type::reference reference; typedef typename container_type::const_reference const_reference; typedef typename container_type::size_type size_type; protected: container_type c; public: stack() = default; ~stack() = default; stack(const stack& q) = default; stack(stack&& q) = default; stack& operator=(const stack& q) = default; stack& operator=(stack&& q) = default; explicit stack(const container_type& c); explicit stack(container_type&& c); template <class InputIterator> stack(InputIterator first, InputIterator last); // since C++23 template<container-compatible-range<T> R> stack(from_range_t, R&& rg); // since C++23 template <class Alloc> explicit stack(const Alloc& a); template <class Alloc> stack(const container_type& c, const Alloc& a); template <class Alloc> stack(container_type&& c, const Alloc& a); template <class Alloc> stack(const stack& c, const Alloc& a); template <class Alloc> stack(stack&& c, const Alloc& a); template<class InputIterator, class Alloc> stack(InputIterator first, InputIterator last, const Alloc&); // since C++23 template<container-compatible-range<T> R, class Alloc> stack(from_range_t, R&& rg, const Alloc&); // since C++23 bool empty() const; size_type size() const; reference top(); const_reference top() const; void push(const value_type& x); void push(value_type&& x); template<container-compatible-range<T> R> void push_range(R&& rg); // C++23 template <class... Args> reference emplace(Args&&... args); // reference in C++17 void pop(); void swap(stack& c) noexcept(is_nothrow_swappable_v<Container>) }; template<class Container> stack(Container) -> stack<typename Container::value_type, Container>; // C++17 template<class InputIterator> stack(InputIterator, InputIterator) -> stack<iter-value-type<InputIterator>>; // since C++23 template<ranges::input_range R> stack(from_range_t, R&&) -> stack<ranges::range_value_t<R>>; // since C++23 template<class Container, class Allocator> stack(Container, Allocator) -> stack<typename Container::value_type, Container>; // C++17 template<class InputIterator, class Allocator> stack(InputIterator, InputIterator, Allocator) -> stack<iter-value-type<InputIterator>, deque<iter-value-type<InputIterator>, Allocator>>; // since C++23 template<ranges::input_range R, class Allocator> stack(from_range_t, R&&, Allocator) -> stack<ranges::range_value_t<R>, deque<ranges::range_value_t<R>, Allocator>>; // since C++23 template <class T, class Container> bool operator==(const stack<T, Container>& x, const stack<T, Container>& y); template <class T, class Container> bool operator< (const stack<T, Container>& x, const stack<T, Container>& y); template <class T, class Container> bool operator!=(const stack<T, Container>& x, const stack<T, Container>& y); template <class T, class Container> bool operator> (const stack<T, Container>& x, const stack<T, Container>& y); template <class T, class Container> bool operator>=(const stack<T, Container>& x, const stack<T, Container>& y); template <class T, class Container> bool operator<=(const stack<T, Container>& x, const stack<T, Container>& y); template<class T, three_way_comparable Container> compare_three_way_result_t<Container> operator<=>(const stack<T, Container>& x, const stack<T, Container>& y); // since C++20 template <class T, class Container> void swap(stack<T, Container>& x, stack<T, Container>& y) noexcept(noexcept(x.swap(y))); } // std */ #include <__algorithm/ranges_copy.h> #include <__config> #include <__fwd/stack.h> #include <__iterator/back_insert_iterator.h> #include <__iterator/iterator_traits.h> #include <__memory/uses_allocator.h> #include <__ranges/access.h> #include <__ranges/concepts.h> #include <__ranges/container_compatible_range.h> #include <__ranges/from_range.h> #include <__type_traits/is_same.h> #include <__utility/forward.h> #include <deque> #include <version> // standard-mandated includes // [stack.syn] #include <compare> #include <initializer_list> #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) # pragma GCC system_header #endif _LIBCPP_PUSH_MACROS #include <__undef_macros> _LIBCPP_BEGIN_NAMESPACE_STD template <class _Tp, class _Container> _LIBCPP_HIDE_FROM_ABI bool operator==(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y); template <class _Tp, class _Container> _LIBCPP_HIDE_FROM_ABI bool operator<(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y); template <class _Tp, class _Container /*= deque<_Tp>*/> class _LIBCPP_TEMPLATE_VIS stack { public: typedef _Container container_type; typedef typename container_type::value_type value_type; typedef typename container_type::reference reference; typedef typename container_type::const_reference const_reference; typedef typename container_type::size_type size_type; static_assert(is_same<_Tp, value_type>::value, ""); protected: container_type c; public: _LIBCPP_HIDE_FROM_ABI stack() _NOEXCEPT_(is_nothrow_default_constructible<container_type>::value) : c() {} _LIBCPP_HIDE_FROM_ABI stack(const stack& __q) : c(__q.c) {} _LIBCPP_HIDE_FROM_ABI stack& operator=(const stack& __q) { c = __q.c; return *this; } #ifndef _LIBCPP_CXX03_LANG _LIBCPP_HIDE_FROM_ABI stack(stack&& __q) noexcept(is_nothrow_move_constructible<container_type>::value) : c(std::move(__q.c)) {} _LIBCPP_HIDE_FROM_ABI stack& operator=(stack&& __q) noexcept(is_nothrow_move_assignable<container_type>::value) { c = std::move(__q.c); return *this; } _LIBCPP_HIDE_FROM_ABI explicit stack(container_type&& __c) : c(std::move(__c)) {} #endif // _LIBCPP_CXX03_LANG _LIBCPP_HIDE_FROM_ABI explicit stack(const container_type& __c) : c(__c) {} template <class _Alloc> _LIBCPP_HIDE_FROM_ABI explicit stack(const _Alloc& __a, __enable_if_t<uses_allocator<container_type, _Alloc>::value>* = 0) : c(__a) {} template <class _Alloc> _LIBCPP_HIDE_FROM_ABI stack(const container_type& __c, const _Alloc& __a, __enable_if_t<uses_allocator<container_type, _Alloc>::value>* = 0) : c(__c, __a) {} template <class _Alloc> _LIBCPP_HIDE_FROM_ABI stack(const stack& __s, const _Alloc& __a, __enable_if_t<uses_allocator<container_type, _Alloc>::value>* = 0) : c(__s.c, __a) {} #ifndef _LIBCPP_CXX03_LANG template <class _Alloc> _LIBCPP_HIDE_FROM_ABI stack(container_type&& __c, const _Alloc& __a, __enable_if_t<uses_allocator<container_type, _Alloc>::value>* = 0) : c(std::move(__c), __a) {} template <class _Alloc> _LIBCPP_HIDE_FROM_ABI stack(stack&& __s, const _Alloc& __a, __enable_if_t<uses_allocator<container_type, _Alloc>::value>* = 0) : c(std::move(__s.c), __a) {} #endif // _LIBCPP_CXX03_LANG #if _LIBCPP_STD_VER >= 23 template <class _InputIterator, __enable_if_t<__has_input_iterator_category<_InputIterator>::value, int> = 0> _LIBCPP_HIDE_FROM_ABI stack(_InputIterator __first, _InputIterator __last) : c(__first, __last) {} template <_ContainerCompatibleRange<_Tp> _Range> _LIBCPP_HIDE_FROM_ABI stack(from_range_t, _Range&& __range) : c(from_range, std::forward<_Range>(__range)) {} template <class _InputIterator, class _Alloc, __enable_if_t<__has_input_iterator_category<_InputIterator>::value, int> = 0, __enable_if_t<uses_allocator<container_type, _Alloc>::value, int> = 0> _LIBCPP_HIDE_FROM_ABI stack(_InputIterator __first, _InputIterator __last, const _Alloc& __alloc) : c(__first, __last, __alloc) {} template <_ContainerCompatibleRange<_Tp> _Range, class _Alloc, __enable_if_t<uses_allocator<container_type, _Alloc>::value, int> = 0> _LIBCPP_HIDE_FROM_ABI stack(from_range_t, _Range&& __range, const _Alloc& __alloc) : c(from_range, std::forward<_Range>(__range), __alloc) {} #endif _LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI bool empty() const { return c.empty(); } _LIBCPP_HIDE_FROM_ABI size_type size() const { return c.size(); } _LIBCPP_HIDE_FROM_ABI reference top() { return c.back(); } _LIBCPP_HIDE_FROM_ABI const_reference top() const { return c.back(); } _LIBCPP_HIDE_FROM_ABI void push(const value_type& __v) { c.push_back(__v); } #ifndef _LIBCPP_CXX03_LANG _LIBCPP_HIDE_FROM_ABI void push(value_type&& __v) { c.push_back(std::move(__v)); } # if _LIBCPP_STD_VER >= 23 template <_ContainerCompatibleRange<_Tp> _Range> _LIBCPP_HIDE_FROM_ABI void push_range(_Range&& __range) { if constexpr (requires(container_type& __c) { __c.append_range(std::forward<_Range>(__range)); }) { c.append_range(std::forward<_Range>(__range)); } else { ranges::copy(std::forward<_Range>(__range), std::back_inserter(c)); } } # endif template <class... _Args> _LIBCPP_HIDE_FROM_ABI # if _LIBCPP_STD_VER >= 17 decltype(auto) emplace(_Args&&... __args) { return c.emplace_back(std::forward<_Args>(__args)...); } # else void emplace(_Args&&... __args) { c.emplace_back(std::forward<_Args>(__args)...); } # endif #endif // _LIBCPP_CXX03_LANG _LIBCPP_HIDE_FROM_ABI void pop() { c.pop_back(); } _LIBCPP_HIDE_FROM_ABI void swap(stack& __s) _NOEXCEPT_(__is_nothrow_swappable_v<container_type>) { using std::swap; swap(c, __s.c); } _LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI const _Container& __get_container() const { return c; } template <class _T1, class _OtherContainer> friend bool operator==(const stack<_T1, _OtherContainer>& __x, const stack<_T1, _OtherContainer>& __y); template <class _T1, class _OtherContainer> friend bool operator<(const stack<_T1, _OtherContainer>& __x, const stack<_T1, _OtherContainer>& __y); }; #if _LIBCPP_STD_VER >= 17 template <class _Container, class = enable_if_t<!__is_allocator<_Container>::value> > stack(_Container) -> stack<typename _Container::value_type, _Container>; template <class _Container, class _Alloc, class = enable_if_t<!__is_allocator<_Container>::value>, class = enable_if_t<uses_allocator<_Container, _Alloc>::value> > stack(_Container, _Alloc) -> stack<typename _Container::value_type, _Container>; #endif #if _LIBCPP_STD_VER >= 23 template <class _InputIterator, __enable_if_t<__has_input_iterator_category<_InputIterator>::value, int> = 0> stack(_InputIterator, _InputIterator) -> stack<__iter_value_type<_InputIterator>>; template <ranges::input_range _Range> stack(from_range_t, _Range&&) -> stack<ranges::range_value_t<_Range>>; template <class _InputIterator, class _Alloc, __enable_if_t<__has_input_iterator_category<_InputIterator>::value, int> = 0, __enable_if_t<__is_allocator<_Alloc>::value, int> = 0> stack(_InputIterator, _InputIterator, _Alloc) -> stack<__iter_value_type<_InputIterator>, deque<__iter_value_type<_InputIterator>, _Alloc>>; template <ranges::input_range _Range, class _Alloc, __enable_if_t<__is_allocator<_Alloc>::value, int> = 0> stack(from_range_t, _Range&&, _Alloc) -> stack<ranges::range_value_t<_Range>, deque<ranges::range_value_t<_Range>, _Alloc>>; #endif template <class _Tp, class _Container> inline _LIBCPP_HIDE_FROM_ABI bool operator==(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y) { return __x.c == __y.c; } template <class _Tp, class _Container> inline _LIBCPP_HIDE_FROM_ABI bool operator<(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y) { return __x.c < __y.c; } template <class _Tp, class _Container> inline _LIBCPP_HIDE_FROM_ABI bool operator!=(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y) { return !(__x == __y); } template <class _Tp, class _Container> inline _LIBCPP_HIDE_FROM_ABI bool operator>(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y) { return __y < __x; } template <class _Tp, class _Container> inline _LIBCPP_HIDE_FROM_ABI bool operator>=(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y) { return !(__x < __y); } template <class _Tp, class _Container> inline _LIBCPP_HIDE_FROM_ABI bool operator<=(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y) { return !(__y < __x); } #if _LIBCPP_STD_VER >= 20 template <class _Tp, three_way_comparable _Container> _LIBCPP_HIDE_FROM_ABI compare_three_way_result_t<_Container> operator<=>(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y) { // clang 16 bug: declaring `friend operator<=>` causes "use of overloaded operator '*' is ambiguous" errors return __x.__get_container() <=> __y.__get_container(); } #endif template <class _Tp, class _Container, __enable_if_t<__is_swappable_v<_Container>, int> = 0> inline _LIBCPP_HIDE_FROM_ABI void swap(stack<_Tp, _Container>& __x, stack<_Tp, _Container>& __y) _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y))) { __x.swap(__y); } template <class _Tp, class _Container, class _Alloc> struct _LIBCPP_TEMPLATE_VIS uses_allocator<stack<_Tp, _Container>, _Alloc> : public uses_allocator<_Container, _Alloc> { }; _LIBCPP_END_NAMESPACE_STD _LIBCPP_POP_MACROS #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 # include <concepts> # include <functional> # include <type_traits> #endif #endif // _LIBCPP_STACK