forked from OSchip/llvm-project
255 lines
9.4 KiB
C++
255 lines
9.4 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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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_UTILITY
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#define _LIBCPP_UTILITY
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/*
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utility synopsis
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#include <initializer_list>
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namespace std
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{
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template <class T>
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void
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swap(T& a, T& b);
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namespace rel_ops
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{
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template<class T> bool operator!=(const T&, const T&);
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template<class T> bool operator> (const T&, const T&);
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template<class T> bool operator<=(const T&, const T&);
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template<class T> bool operator>=(const T&, const T&);
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}
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template<class T>
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void
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swap(T& a, T& b) noexcept(is_nothrow_move_constructible<T>::value &&
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is_nothrow_move_assignable<T>::value);
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template <class T, size_t N>
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void
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swap(T (&a)[N], T (&b)[N]) noexcept(noexcept(swap(*a, *b)));
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template <class T> T&& forward(typename remove_reference<T>::type& t) noexcept; // constexpr in C++14
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template <class T> T&& forward(typename remove_reference<T>::type&& t) noexcept; // constexpr in C++14
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template <class T> typename remove_reference<T>::type&& move(T&&) noexcept; // constexpr in C++14
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template <class T>
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typename conditional
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<
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!is_nothrow_move_constructible<T>::value && is_copy_constructible<T>::value,
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const T&,
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T&&
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>::type
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move_if_noexcept(T& x) noexcept; // constexpr in C++14
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template <class T> constexpr add_const_t<T>& as_const(T& t) noexcept; // C++17
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template <class T> void as_const(const T&&) = delete; // C++17
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template <class T> typename add_rvalue_reference<T>::type declval() noexcept;
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template<class T, class U> constexpr bool cmp_equal(T t, U u) noexcept; // C++20
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template<class T, class U> constexpr bool cmp_not_equal(T t, U u) noexcept; // C++20
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template<class T, class U> constexpr bool cmp_less(T t, U u) noexcept; // C++20
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template<class T, class U> constexpr bool cmp_greater(T t, U u) noexcept; // C++20
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template<class T, class U> constexpr bool cmp_less_equal(T t, U u) noexcept; // C++20
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template<class T, class U> constexpr bool cmp_greater_equal(T t, U u) noexcept; // C++20
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template<class R, class T> constexpr bool in_range(T t) noexcept; // C++20
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template <class T1, class T2>
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struct pair
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{
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typedef T1 first_type;
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typedef T2 second_type;
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T1 first;
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T2 second;
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pair(const pair&) = default;
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pair(pair&&) = default;
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explicit(see-below) constexpr pair();
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explicit(see-below) pair(const T1& x, const T2& y); // constexpr in C++14
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template <class U = T1, class V = T2> explicit(see-below) pair(U&&, V&&); // constexpr in C++14
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template <class U, class V> explicit(see-below) pair(const pair<U, V>& p); // constexpr in C++14
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template <class U, class V> explicit(see-below) pair(pair<U, V>&& p); // constexpr in C++14
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template <class... Args1, class... Args2>
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pair(piecewise_construct_t, tuple<Args1...> first_args,
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tuple<Args2...> second_args); // constexpr in C++20
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template <class U, class V> pair& operator=(const pair<U, V>& p); // constexpr in C++20
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pair& operator=(pair&& p) noexcept(is_nothrow_move_assignable<T1>::value &&
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is_nothrow_move_assignable<T2>::value); // constexpr in C++20
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template <class U, class V> pair& operator=(pair<U, V>&& p); // constexpr in C++20
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void swap(pair& p) noexcept(is_nothrow_swappable_v<T1> &&
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is_nothrow_swappable_v<T2>); // constexpr in C++20
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};
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template<class T1, class T2, class U1, class U2, template<class> class TQual, template<class> class UQual>
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struct basic_common_reference<pair<T1, T2>, pair<U1, U2>, TQual, UQual>; // since C++23
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template<class T1, class T2, class U1, class U2>
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struct common_type<pair<T1, T2>, pair<U1, U2>>; // since C++23
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template<class T1, class T2> pair(T1, T2) -> pair<T1, T2>;
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template <class T1, class T2> bool operator==(const pair<T1,T2>&, const pair<T1,T2>&); // constexpr in C++14
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template <class T1, class T2> bool operator!=(const pair<T1,T2>&, const pair<T1,T2>&); // constexpr in C++14, removed in C++20
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template <class T1, class T2> bool operator< (const pair<T1,T2>&, const pair<T1,T2>&); // constexpr in C++14, removed in C++20
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template <class T1, class T2> bool operator> (const pair<T1,T2>&, const pair<T1,T2>&); // constexpr in C++14, removed in C++20
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template <class T1, class T2> bool operator>=(const pair<T1,T2>&, const pair<T1,T2>&); // constexpr in C++14, removed in C++20
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template <class T1, class T2> bool operator<=(const pair<T1,T2>&, const pair<T1,T2>&); // constexpr in C++14, removed in C++20
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template <class T1, class T2>
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constexpr common_comparison_type_t<synth-three-way-result<T1>,
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synth-three-way-result<T2>>
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operator<=>(const pair<T1,T2>&, const pair<T1,T2>&); // C++20
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template <class T1, class T2> pair<V1, V2> make_pair(T1&&, T2&&); // constexpr in C++14
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template <class T1, class T2>
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void
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swap(pair<T1, T2>& x, pair<T1, T2>& y) noexcept(noexcept(x.swap(y))); // constexpr in C++20
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struct piecewise_construct_t { explicit piecewise_construct_t() = default; };
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inline constexpr piecewise_construct_t piecewise_construct = piecewise_construct_t();
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template <class T> struct tuple_size;
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template <size_t I, class T> struct tuple_element;
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template <class T1, class T2> struct tuple_size<pair<T1, T2> >;
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template <class T1, class T2> struct tuple_element<0, pair<T1, T2> >;
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template <class T1, class T2> struct tuple_element<1, pair<T1, T2> >;
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template<size_t I, class T1, class T2>
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typename tuple_element<I, pair<T1, T2> >::type&
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get(pair<T1, T2>&) noexcept; // constexpr in C++14
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template<size_t I, class T1, class T2>
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const typename tuple_element<I, pair<T1, T2> >::type&
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get(const pair<T1, T2>&) noexcept; // constexpr in C++14
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template<size_t I, class T1, class T2>
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typename tuple_element<I, pair<T1, T2> >::type&&
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get(pair<T1, T2>&&) noexcept; // constexpr in C++14
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template<size_t I, class T1, class T2>
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const typename tuple_element<I, pair<T1, T2> >::type&&
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get(const pair<T1, T2>&&) noexcept; // constexpr in C++14
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template<class T1, class T2>
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constexpr T1& get(pair<T1, T2>&) noexcept; // C++14
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template<class T1, class T2>
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constexpr const T1& get(const pair<T1, T2>&) noexcept; // C++14
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template<class T1, class T2>
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constexpr T1&& get(pair<T1, T2>&&) noexcept; // C++14
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template<class T1, class T2>
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constexpr const T1&& get(const pair<T1, T2>&&) noexcept; // C++14
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template<class T1, class T2>
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constexpr T1& get(pair<T2, T1>&) noexcept; // C++14
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template<class T1, class T2>
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constexpr const T1& get(const pair<T2, T1>&) noexcept; // C++14
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template<class T1, class T2>
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constexpr T1&& get(pair<T2, T1>&&) noexcept; // C++14
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template<class T1, class T2>
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constexpr const T1&& get(const pair<T2, T1>&&) noexcept; // C++14
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// C++14
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template<class T, T... I>
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struct integer_sequence
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{
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typedef T value_type;
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static constexpr size_t size() noexcept;
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};
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template<size_t... I>
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using index_sequence = integer_sequence<size_t, I...>;
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template<class T, T N>
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using make_integer_sequence = integer_sequence<T, 0, 1, ..., N-1>;
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template<size_t N>
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using make_index_sequence = make_integer_sequence<size_t, N>;
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template<class... T>
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using index_sequence_for = make_index_sequence<sizeof...(T)>;
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template<class T, class U=T>
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constexpr T exchange(T& obj, U&& new_value)
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noexcept(is_nothrow_move_constructible<T>::value && is_nothrow_assignable<T&, U>::value); // constexpr in C++17, noexcept in C++23
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// 20.2.7, in-place construction // C++17
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struct in_place_t {
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explicit in_place_t() = default;
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};
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inline constexpr in_place_t in_place{};
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template <class T>
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struct in_place_type_t {
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explicit in_place_type_t() = default;
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};
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template <class T>
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inline constexpr in_place_type_t<T> in_place_type{};
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template <size_t I>
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struct in_place_index_t {
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explicit in_place_index_t() = default;
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};
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template <size_t I>
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inline constexpr in_place_index_t<I> in_place_index{};
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// [utility.underlying], to_underlying
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template <class T>
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constexpr underlying_type_t<T> to_underlying( T value ) noexcept; // C++2b
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} // std
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*/
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#include <__assert> // all public C++ headers provide the assertion handler
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#include <__config>
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#include <__tuple>
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#include <__utility/as_const.h>
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#include <__utility/auto_cast.h>
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#include <__utility/cmp.h>
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#include <__utility/declval.h>
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#include <__utility/exchange.h>
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#include <__utility/forward.h>
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#include <__utility/in_place.h>
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#include <__utility/integer_sequence.h>
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#include <__utility/move.h>
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#include <__utility/pair.h>
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#include <__utility/piecewise_construct.h>
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#include <__utility/priority_tag.h>
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#include <__utility/rel_ops.h>
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#include <__utility/swap.h>
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#include <__utility/to_underlying.h>
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#include <__utility/transaction.h>
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#include <__utility/unreachable.h>
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#include <type_traits>
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#include <version>
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// standard-mandated includes
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#include <compare>
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#include <initializer_list>
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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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#endif // _LIBCPP_UTILITY
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