forked from OSchip/llvm-project
322 lines
9.9 KiB
C++
322 lines
9.9 KiB
C++
// -*- C++ -*-
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//===---------------------------- stack -----------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_STACK
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#define _LIBCPP_STACK
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/*
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stack synopsis
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namespace std
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{
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template <class T, class Container = deque<T>>
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class stack
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{
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public:
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typedef Container container_type;
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typedef typename container_type::value_type value_type;
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typedef typename container_type::reference reference;
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typedef typename container_type::const_reference const_reference;
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typedef typename container_type::size_type size_type;
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protected:
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container_type c;
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public:
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stack() = default;
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~stack() = default;
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stack(const stack& q) = default;
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stack(stack&& q) = default;
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stack& operator=(const stack& q) = default;
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stack& operator=(stack&& q) = default;
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explicit stack(const container_type& c);
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explicit stack(container_type&& c);
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template <class Alloc> explicit stack(const Alloc& a);
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template <class Alloc> stack(const container_type& c, const Alloc& a);
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template <class Alloc> stack(container_type&& c, const Alloc& a);
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template <class Alloc> stack(const stack& c, const Alloc& a);
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template <class Alloc> stack(stack&& c, const Alloc& a);
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bool empty() const;
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size_type size() const;
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reference top();
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const_reference top() const;
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void push(const value_type& x);
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void push(value_type&& x);
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template <class... Args> reference emplace(Args&&... args); // reference in C++17
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void pop();
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void swap(stack& c) noexcept(is_nothrow_swappable_v<Container>)
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};
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template<class Container>
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stack(Container) -> stack<typename Container::value_type, Container>; // C++17
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template<class Container, class Allocator>
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stack(Container, Allocator) -> stack<typename Container::value_type, Container>; // C++17
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template <class T, class Container>
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bool operator==(const stack<T, Container>& x, const stack<T, Container>& y);
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template <class T, class Container>
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bool operator< (const stack<T, Container>& x, const stack<T, Container>& y);
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template <class T, class Container>
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bool operator!=(const stack<T, Container>& x, const stack<T, Container>& y);
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template <class T, class Container>
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bool operator> (const stack<T, Container>& x, const stack<T, Container>& y);
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template <class T, class Container>
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bool operator>=(const stack<T, Container>& x, const stack<T, Container>& y);
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template <class T, class Container>
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bool operator<=(const stack<T, Container>& x, const stack<T, Container>& y);
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template <class T, class Container>
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void swap(stack<T, Container>& x, stack<T, Container>& y)
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noexcept(noexcept(x.swap(y)));
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} // std
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*/
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#include <__config>
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#include <deque>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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#pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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template <class _Tp, class _Container = deque<_Tp> > class _LIBCPP_TEMPLATE_VIS stack;
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template <class _Tp, class _Container>
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_LIBCPP_INLINE_VISIBILITY
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bool
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operator==(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y);
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template <class _Tp, class _Container>
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_LIBCPP_INLINE_VISIBILITY
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bool
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operator< (const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y);
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template <class _Tp, class _Container /*= deque<_Tp>*/>
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class _LIBCPP_TEMPLATE_VIS stack
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{
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public:
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typedef _Container container_type;
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typedef typename container_type::value_type value_type;
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typedef typename container_type::reference reference;
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typedef typename container_type::const_reference const_reference;
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typedef typename container_type::size_type size_type;
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static_assert((is_same<_Tp, value_type>::value), "" );
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protected:
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container_type c;
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public:
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_LIBCPP_INLINE_VISIBILITY
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stack()
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_NOEXCEPT_(is_nothrow_default_constructible<container_type>::value)
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: c() {}
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_LIBCPP_INLINE_VISIBILITY
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stack(const stack& __q) : c(__q.c) {}
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_LIBCPP_INLINE_VISIBILITY
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stack& operator=(const stack& __q) {c = __q.c; return *this;}
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#ifndef _LIBCPP_CXX03_LANG
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_LIBCPP_INLINE_VISIBILITY
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stack(stack&& __q)
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_NOEXCEPT_(is_nothrow_move_constructible<container_type>::value)
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: c(_VSTD::move(__q.c)) {}
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_LIBCPP_INLINE_VISIBILITY
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stack& operator=(stack&& __q)
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_NOEXCEPT_(is_nothrow_move_assignable<container_type>::value)
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{c = _VSTD::move(__q.c); return *this;}
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_LIBCPP_INLINE_VISIBILITY
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explicit stack(container_type&& __c) : c(_VSTD::move(__c)) {}
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#endif // _LIBCPP_CXX03_LANG
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_LIBCPP_INLINE_VISIBILITY
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explicit stack(const container_type& __c) : c(__c) {}
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template <class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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explicit stack(const _Alloc& __a,
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typename enable_if<uses_allocator<container_type,
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_Alloc>::value>::type* = 0)
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: c(__a) {}
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template <class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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stack(const container_type& __c, const _Alloc& __a,
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typename enable_if<uses_allocator<container_type,
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_Alloc>::value>::type* = 0)
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: c(__c, __a) {}
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template <class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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stack(const stack& __s, const _Alloc& __a,
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typename enable_if<uses_allocator<container_type,
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_Alloc>::value>::type* = 0)
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: c(__s.c, __a) {}
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#ifndef _LIBCPP_CXX03_LANG
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template <class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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stack(container_type&& __c, const _Alloc& __a,
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typename enable_if<uses_allocator<container_type,
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_Alloc>::value>::type* = 0)
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: c(_VSTD::move(__c), __a) {}
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template <class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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stack(stack&& __s, const _Alloc& __a,
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typename enable_if<uses_allocator<container_type,
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_Alloc>::value>::type* = 0)
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: c(_VSTD::move(__s.c), __a) {}
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#endif // _LIBCPP_CXX03_LANG
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_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
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bool empty() const {return c.empty();}
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_LIBCPP_INLINE_VISIBILITY
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size_type size() const {return c.size();}
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_LIBCPP_INLINE_VISIBILITY
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reference top() {return c.back();}
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_LIBCPP_INLINE_VISIBILITY
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const_reference top() const {return c.back();}
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_LIBCPP_INLINE_VISIBILITY
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void push(const value_type& __v) {c.push_back(__v);}
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#ifndef _LIBCPP_CXX03_LANG
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_LIBCPP_INLINE_VISIBILITY
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void push(value_type&& __v) {c.push_back(_VSTD::move(__v));}
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template <class... _Args>
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_LIBCPP_INLINE_VISIBILITY
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#if _LIBCPP_STD_VER > 14
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decltype(auto) emplace(_Args&&... __args)
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{ return c.emplace_back(_VSTD::forward<_Args>(__args)...);}
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#else
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void emplace(_Args&&... __args)
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{ c.emplace_back(_VSTD::forward<_Args>(__args)...);}
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#endif
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#endif // _LIBCPP_CXX03_LANG
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_LIBCPP_INLINE_VISIBILITY
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void pop() {c.pop_back();}
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_LIBCPP_INLINE_VISIBILITY
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void swap(stack& __s)
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_NOEXCEPT_(__is_nothrow_swappable<container_type>::value)
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{
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using _VSTD::swap;
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swap(c, __s.c);
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}
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template <class T1, class _C1>
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friend
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bool
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operator==(const stack<T1, _C1>& __x, const stack<T1, _C1>& __y);
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template <class T1, class _C1>
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friend
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bool
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operator< (const stack<T1, _C1>& __x, const stack<T1, _C1>& __y);
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};
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#ifndef _LIBCPP_HAS_NO_DEDUCTION_GUIDES
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template<class _Container,
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class = typename enable_if<!__is_allocator<_Container>::value, nullptr_t>::type
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>
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stack(_Container)
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-> stack<typename _Container::value_type, _Container>;
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template<class _Container,
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class _Alloc,
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class = typename enable_if<!__is_allocator<_Container>::value, nullptr_t>::type,
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class = typename enable_if< __is_allocator<_Alloc>::value, nullptr_t>::type
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>
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stack(_Container, _Alloc)
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-> stack<typename _Container::value_type, _Container>;
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#endif
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template <class _Tp, class _Container>
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inline _LIBCPP_INLINE_VISIBILITY
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bool
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operator==(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y)
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{
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return __x.c == __y.c;
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}
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template <class _Tp, class _Container>
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inline _LIBCPP_INLINE_VISIBILITY
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bool
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operator< (const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y)
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{
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return __x.c < __y.c;
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}
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template <class _Tp, class _Container>
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inline _LIBCPP_INLINE_VISIBILITY
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bool
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operator!=(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y)
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{
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return !(__x == __y);
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}
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template <class _Tp, class _Container>
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inline _LIBCPP_INLINE_VISIBILITY
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bool
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operator> (const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y)
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{
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return __y < __x;
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}
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template <class _Tp, class _Container>
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inline _LIBCPP_INLINE_VISIBILITY
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bool
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operator>=(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y)
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{
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return !(__x < __y);
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}
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template <class _Tp, class _Container>
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inline _LIBCPP_INLINE_VISIBILITY
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bool
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operator<=(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y)
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{
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return !(__y < __x);
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}
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template <class _Tp, class _Container>
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inline _LIBCPP_INLINE_VISIBILITY
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typename enable_if<
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__is_swappable<_Container>::value,
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void
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>::type
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swap(stack<_Tp, _Container>& __x, stack<_Tp, _Container>& __y)
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_NOEXCEPT_(_NOEXCEPT_(__x.swap(__y)))
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{
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__x.swap(__y);
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}
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template <class _Tp, class _Container, class _Alloc>
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struct _LIBCPP_TEMPLATE_VIS uses_allocator<stack<_Tp, _Container>, _Alloc>
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: public uses_allocator<_Container, _Alloc>
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{
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};
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_STACK
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