57b08b0944
to reflect the new license. These used slightly different spellings that defeated my regular expressions. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351648
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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