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-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP___CXX03_STACK 11#define _LIBCPP___CXX03_STACK 12 13/* 14 stack synopsis 15 16namespace std 17{ 18 19template <class T, class Container = deque<T>> 20class stack 21{ 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++23 45 template<container-compatible-range<T> R> stack(from_range_t, R&& rg); // since C++23 46 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++23 53 template<container-compatible-range<T> R, class Alloc> 54 stack(from_range_t, R&& rg, const Alloc&); // since C++23 55 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++23 65 template <class... Args> reference emplace(Args&&... args); // reference in C++17 66 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++17 73 74template<class InputIterator> 75 stack(InputIterator, InputIterator) -> stack<iter-value-type<InputIterator>>; // since C++23 76 77template<ranges::input_range R> 78 stack(from_range_t, R&&) -> stack<ranges::range_value_t<R>>; // since C++23 79 80template<class Container, class Allocator> 81 stack(Container, Allocator) -> stack<typename Container::value_type, Container>; // C++17 82 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++23 87 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++23 91 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++20 107 108template <class T, class Container> 109 void swap(stack<T, Container>& x, stack<T, Container>& y) 110 noexcept(noexcept(x.swap(y))); 111 112} // std 113 114*/ 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_header 128#endif 129 130_LIBCPP_PUSH_MACROS 131#include <__cxx03/__undef_macros> 132 133_LIBCPP_BEGIN_NAMESPACE_STD 134 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_ABI 172 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_ABI 176 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_STD 242 243_LIBCPP_POP_MACROS 244 245#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) 246# include <__cxx03/functional> 247# include <__cxx03/type_traits> 248#endif 249 250#endif // _LIBCPP___CXX03_STACK 251