зеркало из https://github.com/microsoft/STL.git
173 строки
6.1 KiB
C++
173 строки
6.1 KiB
C++
// stack standard header
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// Copyright (c) Microsoft Corporation.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#pragma once
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#ifndef _STACK_
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#define _STACK_
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#include <yvals_core.h>
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#if _STL_COMPILER_PREPROCESSOR
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#include <deque>
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#pragma pack(push, _CRT_PACKING)
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#pragma warning(push, _STL_WARNING_LEVEL)
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#pragma warning(disable : _STL_DISABLED_WARNINGS)
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_STL_DISABLE_CLANG_WARNINGS
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#pragma push_macro("new")
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#undef new
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_STD_BEGIN
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// CLASS TEMPLATE stack
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template <class _Ty, class _Container = deque<_Ty>>
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class stack {
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public:
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using value_type = typename _Container::value_type;
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using reference = typename _Container::reference;
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using const_reference = typename _Container::const_reference;
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using size_type = typename _Container::size_type;
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using container_type = _Container;
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static_assert(is_same_v<_Ty, value_type>, "container adaptors require consistent types");
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stack() = default;
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explicit stack(const _Container& _Cont) : c(_Cont) {}
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explicit stack(_Container&& _Cont) noexcept(is_nothrow_move_constructible_v<_Container>) // strengthened
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: c(_STD move(_Cont)) {}
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template <class _Alloc, enable_if_t<uses_allocator_v<_Container, _Alloc>, int> = 0>
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explicit stack(const _Alloc& _Al) noexcept(is_nothrow_constructible_v<_Container, const _Alloc&>) // strengthened
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: c(_Al) {}
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template <class _Alloc, enable_if_t<uses_allocator_v<_Container, _Alloc>, int> = 0>
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stack(const _Container& _Cont, const _Alloc& _Al) : c(_Cont, _Al) {}
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template <class _Alloc, enable_if_t<uses_allocator_v<_Container, _Alloc>, int> = 0>
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stack(_Container&& _Cont, const _Alloc& _Al) noexcept(
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is_nothrow_constructible_v<_Container, _Container, const _Alloc&>) // strengthened
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: c(_STD move(_Cont), _Al) {}
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template <class _Alloc, enable_if_t<uses_allocator_v<_Container, _Alloc>, int> = 0>
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stack(const stack& _Right, const _Alloc& _Al) : c(_Right.c, _Al) {}
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template <class _Alloc, enable_if_t<uses_allocator_v<_Container, _Alloc>, int> = 0>
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stack(stack&& _Right, const _Alloc& _Al) noexcept(
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is_nothrow_constructible_v<_Container, _Container, const _Alloc&>) // strengthened
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: c(_STD move(_Right.c), _Al) {}
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_NODISCARD bool empty() const noexcept(noexcept(c.empty())) /* strengthened */ {
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return c.empty();
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}
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_NODISCARD size_type size() const noexcept(noexcept(c.size())) /* strengthened */ {
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return c.size();
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}
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_NODISCARD reference top() noexcept(noexcept(c.back())) /* strengthened */ {
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return c.back();
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}
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_NODISCARD const_reference top() const noexcept(noexcept(c.back())) /* strengthened */ {
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return c.back();
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}
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void push(const value_type& _Val) {
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c.push_back(_Val);
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}
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void push(value_type&& _Val) {
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c.push_back(_STD move(_Val));
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}
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template <class... _Valty>
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decltype(auto) emplace(_Valty&&... _Val) {
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#if _HAS_CXX17
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return c.emplace_back(_STD forward<_Valty>(_Val)...);
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#else // ^^^ C++17 or newer / C++14 vvv
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c.emplace_back(_STD forward<_Valty>(_Val)...);
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#endif // _HAS_CXX17
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}
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void pop() noexcept(noexcept(c.pop_back())) /* strengthened */ {
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c.pop_back();
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}
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void swap(stack& _Right) noexcept(_Is_nothrow_swappable<_Container>::value) {
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_Swap_adl(c, _Right.c);
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}
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_NODISCARD const _Container& _Get_container() const noexcept {
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return c;
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}
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protected:
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_Container c{};
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};
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#if _HAS_CXX17
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template <class _Container, enable_if_t<!_Is_allocator<_Container>::value, int> = 0>
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stack(_Container) -> stack<typename _Container::value_type, _Container>;
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template <class _Container, class _Alloc,
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enable_if_t<
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conjunction_v<negation<_Is_allocator<_Container>>, _Is_allocator<_Alloc>, uses_allocator<_Container, _Alloc>>,
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int> = 0>
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stack(_Container, _Alloc) -> stack<typename _Container::value_type, _Container>;
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#endif // _HAS_CXX17
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template <class _Ty, class _Container>
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_NODISCARD bool operator==(const stack<_Ty, _Container>& _Left, const stack<_Ty, _Container>& _Right) {
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return _Left._Get_container() == _Right._Get_container();
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}
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template <class _Ty, class _Container>
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_NODISCARD bool operator!=(const stack<_Ty, _Container>& _Left, const stack<_Ty, _Container>& _Right) {
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return _Left._Get_container() != _Right._Get_container();
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}
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template <class _Ty, class _Container>
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_NODISCARD bool operator<(const stack<_Ty, _Container>& _Left, const stack<_Ty, _Container>& _Right) {
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return _Left._Get_container() < _Right._Get_container();
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}
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template <class _Ty, class _Container>
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_NODISCARD bool operator>(const stack<_Ty, _Container>& _Left, const stack<_Ty, _Container>& _Right) {
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return _Left._Get_container() > _Right._Get_container();
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}
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template <class _Ty, class _Container>
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_NODISCARD bool operator<=(const stack<_Ty, _Container>& _Left, const stack<_Ty, _Container>& _Right) {
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return _Left._Get_container() <= _Right._Get_container();
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}
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template <class _Ty, class _Container>
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_NODISCARD bool operator>=(const stack<_Ty, _Container>& _Left, const stack<_Ty, _Container>& _Right) {
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return _Left._Get_container() >= _Right._Get_container();
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}
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#ifdef __cpp_lib_concepts
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template <class _Ty, three_way_comparable _Container>
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_NODISCARD compare_three_way_result_t<_Container> operator<=>(
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const stack<_Ty, _Container>& _Left, const stack<_Ty, _Container>& _Right) {
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return _Left._Get_container() <=> _Right._Get_container();
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}
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#endif // __cpp_lib_concepts
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template <class _Ty, class _Container, enable_if_t<_Is_swappable<_Container>::value, int> = 0>
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void swap(stack<_Ty, _Container>& _Left, stack<_Ty, _Container>& _Right) noexcept(noexcept(_Left.swap(_Right))) {
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_Left.swap(_Right);
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}
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template <class _Ty, class _Container, class _Alloc>
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struct uses_allocator<stack<_Ty, _Container>, _Alloc> : uses_allocator<_Container, _Alloc>::type {};
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_STD_END
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#pragma pop_macro("new")
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_STL_RESTORE_CLANG_WARNINGS
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#pragma warning(pop)
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#pragma pack(pop)
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#endif // _STL_COMPILER_PREPROCESSOR
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#endif // _STACK_
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