251 lines · plain
1// -*- C++ -*-2//===----------------------------------------------------------------------===//3//4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.5// See https://llvm.org/LICENSE.txt for license information.6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception7//8//===----------------------------------------------------------------------===//9 10#ifndef _LIBCPP___CXX03_STACK11#define _LIBCPP___CXX03_STACK12 13/*14 stack synopsis15 16namespace std17{18 19template <class T, class Container = deque<T>>20class stack21{22public:23 typedef Container container_type;24 typedef typename container_type::value_type value_type;25 typedef typename container_type::reference reference;26 typedef typename container_type::const_reference const_reference;27 typedef typename container_type::size_type size_type;28 29protected:30 container_type c;31 32public:33 stack() = default;34 ~stack() = default;35 36 stack(const stack& q) = default;37 stack(stack&& q) = default;38 39 stack& operator=(const stack& q) = default;40 stack& operator=(stack&& q) = default;41 42 explicit stack(const container_type& c);43 explicit stack(container_type&& c);44 template <class InputIterator> stack(InputIterator first, InputIterator last); // since C++2345 template<container-compatible-range<T> R> stack(from_range_t, R&& rg); // since C++2346 template <class Alloc> explicit stack(const Alloc& a);47 template <class Alloc> stack(const container_type& c, const Alloc& a);48 template <class Alloc> stack(container_type&& c, const Alloc& a);49 template <class Alloc> stack(const stack& c, const Alloc& a);50 template <class Alloc> stack(stack&& c, const Alloc& a);51 template<class InputIterator, class Alloc>52 stack(InputIterator first, InputIterator last, const Alloc&); // since C++2353 template<container-compatible-range<T> R, class Alloc>54 stack(from_range_t, R&& rg, const Alloc&); // since C++2355 56 bool empty() const;57 size_type size() const;58 reference top();59 const_reference top() const;60 61 void push(const value_type& x);62 void push(value_type&& x);63 template<container-compatible-range<T> R>64 void push_range(R&& rg); // C++2365 template <class... Args> reference emplace(Args&&... args); // reference in C++1766 void pop();67 68 void swap(stack& c) noexcept(is_nothrow_swappable_v<Container>)69};70 71template<class Container>72 stack(Container) -> stack<typename Container::value_type, Container>; // C++1773 74template<class InputIterator>75 stack(InputIterator, InputIterator) -> stack<iter-value-type<InputIterator>>; // since C++2376 77template<ranges::input_range R>78 stack(from_range_t, R&&) -> stack<ranges::range_value_t<R>>; // since C++2379 80template<class Container, class Allocator>81 stack(Container, Allocator) -> stack<typename Container::value_type, Container>; // C++1782 83template<class InputIterator, class Allocator>84 stack(InputIterator, InputIterator, Allocator)85 -> stack<iter-value-type<InputIterator>,86 deque<iter-value-type<InputIterator>, Allocator>>; // since C++2387 88template<ranges::input_range R, class Allocator>89 stack(from_range_t, R&&, Allocator)90 -> stack<ranges::range_value_t<R>, deque<ranges::range_value_t<R>, Allocator>>; // since C++2391 92template <class T, class Container>93 bool operator==(const stack<T, Container>& x, const stack<T, Container>& y);94template <class T, class Container>95 bool operator< (const stack<T, Container>& x, const stack<T, Container>& y);96template <class T, class Container>97 bool operator!=(const stack<T, Container>& x, const stack<T, Container>& y);98template <class T, class Container>99 bool operator> (const stack<T, Container>& x, const stack<T, Container>& y);100template <class T, class Container>101 bool operator>=(const stack<T, Container>& x, const stack<T, Container>& y);102template <class T, class Container>103 bool operator<=(const stack<T, Container>& x, const stack<T, Container>& y);104template<class T, three_way_comparable Container>105 compare_three_way_result_t<Container>106 operator<=>(const stack<T, Container>& x, const stack<T, Container>& y); // since C++20107 108template <class T, class Container>109 void swap(stack<T, Container>& x, stack<T, Container>& y)110 noexcept(noexcept(x.swap(y)));111 112} // std113 114*/115 116#include <__cxx03/__config>117#include <__cxx03/__fwd/stack.h>118#include <__cxx03/__iterator/back_insert_iterator.h>119#include <__cxx03/__iterator/iterator_traits.h>120#include <__cxx03/__memory/uses_allocator.h>121#include <__cxx03/__type_traits/is_same.h>122#include <__cxx03/__utility/forward.h>123#include <__cxx03/deque>124#include <__cxx03/version>125 126#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)127# pragma GCC system_header128#endif129 130_LIBCPP_PUSH_MACROS131#include <__cxx03/__undef_macros>132 133_LIBCPP_BEGIN_NAMESPACE_STD134 135template <class _Tp, class _Container>136_LIBCPP_HIDE_FROM_ABI bool operator==(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y);137 138template <class _Tp, class _Container>139_LIBCPP_HIDE_FROM_ABI bool operator<(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y);140 141template <class _Tp, class _Container /*= deque<_Tp>*/>142class _LIBCPP_TEMPLATE_VIS stack {143public:144 typedef _Container container_type;145 typedef typename container_type::value_type value_type;146 typedef typename container_type::reference reference;147 typedef typename container_type::const_reference const_reference;148 typedef typename container_type::size_type size_type;149 static_assert(is_same<_Tp, value_type>::value, "");150 151protected:152 container_type c;153 154public:155 _LIBCPP_HIDE_FROM_ABI stack() : c() {}156 157 _LIBCPP_HIDE_FROM_ABI stack(const stack& __q) : c(__q.c) {}158 159 _LIBCPP_HIDE_FROM_ABI stack& operator=(const stack& __q) {160 c = __q.c;161 return *this;162 }163 164 _LIBCPP_HIDE_FROM_ABI explicit stack(const container_type& __c) : c(__c) {}165 166 template <class _Alloc>167 _LIBCPP_HIDE_FROM_ABI explicit stack(const _Alloc& __a,168 __enable_if_t<uses_allocator<container_type, _Alloc>::value>* = 0)169 : c(__a) {}170 template <class _Alloc>171 _LIBCPP_HIDE_FROM_ABI172 stack(const container_type& __c, const _Alloc& __a, __enable_if_t<uses_allocator<container_type, _Alloc>::value>* = 0)173 : c(__c, __a) {}174 template <class _Alloc>175 _LIBCPP_HIDE_FROM_ABI176 stack(const stack& __s, const _Alloc& __a, __enable_if_t<uses_allocator<container_type, _Alloc>::value>* = 0)177 : c(__s.c, __a) {}178 179 _LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI bool empty() const { return c.empty(); }180 _LIBCPP_HIDE_FROM_ABI size_type size() const { return c.size(); }181 _LIBCPP_HIDE_FROM_ABI reference top() { return c.back(); }182 _LIBCPP_HIDE_FROM_ABI const_reference top() const { return c.back(); }183 184 _LIBCPP_HIDE_FROM_ABI void push(const value_type& __v) { c.push_back(__v); }185 186 _LIBCPP_HIDE_FROM_ABI void pop() { c.pop_back(); }187 188 _LIBCPP_HIDE_FROM_ABI void swap(stack& __s) {189 using std::swap;190 swap(c, __s.c);191 }192 193 _LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI const _Container& __get_container() const { return c; }194 195 template <class _T1, class _OtherContainer>196 friend bool operator==(const stack<_T1, _OtherContainer>& __x, const stack<_T1, _OtherContainer>& __y);197 198 template <class _T1, class _OtherContainer>199 friend bool operator<(const stack<_T1, _OtherContainer>& __x, const stack<_T1, _OtherContainer>& __y);200};201 202template <class _Tp, class _Container>203inline _LIBCPP_HIDE_FROM_ABI bool operator==(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y) {204 return __x.c == __y.c;205}206 207template <class _Tp, class _Container>208inline _LIBCPP_HIDE_FROM_ABI bool operator<(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y) {209 return __x.c < __y.c;210}211 212template <class _Tp, class _Container>213inline _LIBCPP_HIDE_FROM_ABI bool operator!=(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y) {214 return !(__x == __y);215}216 217template <class _Tp, class _Container>218inline _LIBCPP_HIDE_FROM_ABI bool operator>(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y) {219 return __y < __x;220}221 222template <class _Tp, class _Container>223inline _LIBCPP_HIDE_FROM_ABI bool operator>=(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y) {224 return !(__x < __y);225}226 227template <class _Tp, class _Container>228inline _LIBCPP_HIDE_FROM_ABI bool operator<=(const stack<_Tp, _Container>& __x, const stack<_Tp, _Container>& __y) {229 return !(__y < __x);230}231 232template <class _Tp, class _Container, __enable_if_t<__is_swappable_v<_Container>, int> = 0>233inline _LIBCPP_HIDE_FROM_ABI void swap(stack<_Tp, _Container>& __x, stack<_Tp, _Container>& __y) {234 __x.swap(__y);235}236 237template <class _Tp, class _Container, class _Alloc>238struct _LIBCPP_TEMPLATE_VIS uses_allocator<stack<_Tp, _Container>, _Alloc> : public uses_allocator<_Container, _Alloc> {239};240 241_LIBCPP_END_NAMESPACE_STD242 243_LIBCPP_POP_MACROS244 245#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES)246# include <__cxx03/functional>247# include <__cxx03/type_traits>248#endif249 250#endif // _LIBCPP___CXX03_STACK251