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- // -*- C++ -*-
- //===----------------------------------------------------------------------===//
- //
- // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
- // See https://llvm.org/LICENSE.txt for license information.
- // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
- //
- //===----------------------------------------------------------------------===//
- #ifndef _LIBCPP_RANGES
- #define _LIBCPP_RANGES
- /*
- #include <compare> // see [compare.syn]
- #include <initializer_list> // see [initializer.list.syn]
- #include <iterator> // see [iterator.synopsis]
- namespace std::ranges {
- inline namespace unspecified {
- // [range.access], range access
- inline constexpr unspecified begin = unspecified;
- inline constexpr unspecified end = unspecified;
- inline constexpr unspecified cbegin = unspecified;
- inline constexpr unspecified cend = unspecified;
- inline constexpr unspecified size = unspecified;
- inline constexpr unspecified ssize = unspecified;
- }
- // [range.range], ranges
- template<class T>
- concept range = see below;
- template<class T>
- inline constexpr bool enable_borrowed_range = false;
- template<class T>
- using iterator_t = decltype(ranges::begin(declval<T&>()));
- template<range R>
- using sentinel_t = decltype(ranges::end(declval<R&>()));
- template<range R>
- using range_difference_t = iter_difference_t<iterator_t<R>>;
- template<sized_range R>
- using range_size_t = decltype(ranges::size(declval<R&>()));
- template<range R>
- using range_value_t = iter_value_t<iterator_t<R>>;
- template<range R>
- using range_reference_t = iter_reference_t<iterator_t<R>>;
- template<range R>
- using range_rvalue_reference_t = iter_rvalue_reference_t<iterator_t<R>>;
- template <range R>
- using range_common_reference_t = iter_common_reference_t<iterator_t<R>>;
- // [range.sized], sized ranges
- template<class>
- inline constexpr bool disable_sized_range = false;
- template<class T>
- concept sized_range = ...;
- // [range.view], views
- template<class T>
- inline constexpr bool enable_view = ...;
- struct view_base { };
- template<class T>
- concept view = ...;
- // [range.refinements], other range refinements
- template<class R, class T>
- concept output_range = see below;
- template<class T>
- concept input_range = see below;
- template<class T>
- concept forward_range = see below;
- template<class T>
- concept bidirectional_range = see below;
- template<class T>
- concept random_access_range = see below;
- template<class T>
- concept contiguous_range = see below;
- template <class _Tp>
- concept common_range = see below;
- template<class T>
- concept viewable_range = see below;
- // [view.interface], class template view_interface
- template<class D>
- requires is_class_v<D> && same_as<D, remove_cv_t<D>>
- class view_interface;
- // [range.subrange], sub-ranges
- enum class subrange_kind : bool { unsized, sized };
- template<input_or_output_iterator I, sentinel_for<I> S = I, subrange_kind K = see below>
- requires (K == subrange_kind::sized || !sized_sentinel_for<S, I>)
- class subrange;
- template<class I, class S, subrange_kind K>
- inline constexpr bool enable_borrowed_range<subrange<I, S, K>> = true;
- // [range.dangling], dangling iterator handling
- struct dangling;
- template<range R>
- using borrowed_iterator_t = see below;
- template<range R>
- using borrowed_subrange_t = see below;
- // [range.elements], elements view
- template<input_range V, size_t N>
- requires see below
- class elements_view;
- template<class T, size_t N>
- inline constexpr bool enable_borrowed_range<elements_view<T, N>> =
- enable_borrowed_range<T>;
- template<class R>
- using keys_view = elements_view<R, 0>;
- template<class R>
- using values_view = elements_view<R, 1>;
- namespace views {
- template<size_t N>
- inline constexpr unspecified elements = unspecified;
- inline constexpr auto keys = elements<0>;
- inline constexpr auto values = elements<1>;
- }
- // [range.utility.conv], range conversions
- template<class C, input_range R, class... Args> requires (!view<C>)
- constexpr C to(R&& r, Args&&... args); // Since C++23
- template<template<class...> class C, input_range R, class... Args>
- constexpr auto to(R&& r, Args&&... args); // Since C++23
- template<class C, class... Args> requires (!view<C>)
- constexpr auto to(Args&&... args); // Since C++23
- template<template<class...> class C, class... Args>
- constexpr auto to(Args&&... args); // Since C++23
- // [range.empty], empty view
- template<class T>
- requires is_object_v<T>
- class empty_view;
- template<class T>
- inline constexpr bool enable_borrowed_range<empty_view<T>> = true;
- namespace views {
- template<class T>
- inline constexpr empty_view<T> empty{};
- }
- // [range.all], all view
- namespace views {
- inline constexpr unspecified all = unspecified;
- template<viewable_range R>
- using all_t = decltype(all(declval<R>()));
- }
- template<range R>
- requires is_object_v<R>
- class ref_view;
- template<class T>
- inline constexpr bool enable_borrowed_range<ref_view<T>> = true;
- template<range R>
- requires see below
- class owning_view;
- template<class T>
- inline constexpr bool enable_borrowed_range<owning_view<T>> = enable_borrowed_range<T>;
- // [range.filter], filter view
- template<input_range V, indirect_unary_predicate<iterator_t<V>> Pred>
- requires view<V> && is_object_v<Pred>
- class filter_view;
- namespace views {
- inline constexpr unspecified filter = unspecified;
- }
- // [range.drop], drop view
- template<view V>
- class drop_view;
- template<class T>
- inline constexpr bool enable_borrowed_range<drop_view<T>> = enable_borrowed_range<T>;
- // [range.drop.while], drop while view
- template<view V, class Pred>
- requires input_range<V> && is_object_v<Pred> &&
- indirect_unary_predicate<const Pred, iterator_t<V>>
- class drop_while_view;
- template<class T, class Pred>
- inline constexpr bool enable_borrowed_range<drop_while_view<T, Pred>> =
- enable_borrowed_range<T>;
- namespace views { inline constexpr unspecified drop_while = unspecified; }
- // [range.transform], transform view
- template<input_range V, copy_constructible F>
- requires view<V> && is_object_v<F> &&
- regular_invocable<F&, range_reference_t<V>> &&
- can-reference<invoke_result_t<F&, range_reference_t<V>>>
- class transform_view;
- // [range.counted], counted view
- namespace views { inline constexpr unspecified counted = unspecified; }
- // [range.common], common view
- template<view V>
- requires (!common_range<V> && copyable<iterator_t<V>>)
- class common_view;
- // [range.reverse], reverse view
- template<view V>
- requires bidirectional_range<V>
- class reverse_view;
- template<class T>
- inline constexpr bool enable_borrowed_range<reverse_view<T>> = enable_borrowed_range<T>;
- template<class T>
- inline constexpr bool enable_borrowed_range<common_view<T>> = enable_borrowed_range<T>;
- // [range.take], take view
- template<view> class take_view;
- template<class T>
- inline constexpr bool enable_borrowed_range<take_view<T>> = enable_borrowed_range<T>;
- // [range.take.while], take while view
- template<view V, class Pred>
- requires input_range<V> && is_object_v<Pred> &&
- indirect_unary_predicate<const Pred, iterator_t<V>>
- class take_while_view;
- namespace views { inline constexpr unspecified take_while = unspecified; }
- template<copy_constructible T>
- requires is_object_v<T>
- class single_view;
- template<weakly_incrementable W, semiregular Bound = unreachable_sentinel_t>
- requires weakly-equality-comparable-with<W, Bound> && copyable<W>
- class iota_view;
- template<class W, class Bound>
- inline constexpr bool enable_borrowed_range<iota_view<W, Bound>> = true;
- // [range.repeat], repeat view
- template<class T>
- concept integer-like-with-usable-difference-type = // exposition only
- is-signed-integer-like<T> || (is-integer-like<T> && weakly_incrementable<T>);
- template<move_constructible T, semiregular Bound = unreachable_sentinel_t>
- requires (is_object_v<T> && same_as<T, remove_cv_t<T>> &&
- (integer-like-with-usable-difference-type<Bound> ||
- same_as<Bound, unreachable_sentinel_t>))
- class repeat_view;
- namespace views { inline constexpr unspecified repeat = unspecified; }
- // [range.join], join view
- template<input_range V>
- requires view<V> && input_range<range_reference_t<V>>
- class join_view;
- // [range.lazy.split], lazy split view
- template<class R>
- concept tiny-range = see below; // exposition only
- template<input_range V, forward_range Pattern>
- requires view<V> && view<Pattern> &&
- indirectly_comparable<iterator_t<V>, iterator_t<Pattern>, ranges::equal_to> &&
- (forward_range<V> || tiny-range<Pattern>)
- class lazy_split_view;
- // [range.split], split view
- template<forward_range V, forward_range Pattern>
- requires view<V> && view<Pattern> &&
- indirectly_comparable<iterator_t<V>, iterator_t<Pattern>, ranges::equal_to>
- class split_view;
- namespace views {
- inline constexpr unspecified lazy_split = unspecified;
- inline constexpr unspecified split = unspecified;
- }
- // [range.istream], istream view
- template<movable Val, class CharT, class Traits = char_traits<CharT>>
- requires see below
- class basic_istream_view;
- template<class Val>
- using istream_view = basic_istream_view<Val, char>;
- template<class Val>
- using wistream_view = basic_istream_view<Val, wchar_t>;
- namespace views { template<class T> inline constexpr unspecified istream = unspecified; }
- // [range.zip], zip view
- template<input_range... Views>
- requires (view<Views> && ...) && (sizeof...(Views) > 0)
- class zip_view; // C++23
- template<class... Views>
- inline constexpr bool enable_borrowed_range<zip_view<Views...>> = // C++23
- (enable_borrowed_range<Views> && ...);
- namespace views { inline constexpr unspecified zip = unspecified; } // C++23
- // [range.as.rvalue]
- template <view V>
- requires input_range<V>
- class as_rvalue_view; // C++23
- namespace views { inline constexpr unspecified as_rvalue ) unspecified; } // C++23
- [range.chunk.by]
- template<forward_range V, indirect_binary_predicate<iterator_t<V>, iterator_t<V>> Pred>
- requires view<V> && is_object_v<Pred>
- class chunk_by_view; // C++23
- namespace views { inline constexpr unspecified chunk_by = unspecified; } // C++23
- }
- namespace std {
- namespace views = ranges::views;
- template<class T> struct tuple_size;
- template<size_t I, class T> struct tuple_element;
- template<class I, class S, ranges::subrange_kind K>
- struct tuple_size<ranges::subrange<I, S, K>>
- : integral_constant<size_t, 2> {};
- template<class I, class S, ranges::subrange_kind K>
- struct tuple_element<0, ranges::subrange<I, S, K>> {
- using type = I;
- };
- template<class I, class S, ranges::subrange_kind K>
- struct tuple_element<1, ranges::subrange<I, S, K>> {
- using type = S;
- };
- template<class I, class S, ranges::subrange_kind K>
- struct tuple_element<0, const ranges::subrange<I, S, K>> {
- using type = I;
- };
- template<class I, class S, ranges::subrange_kind K>
- struct tuple_element<1, const ranges::subrange<I, S, K>> {
- using type = S;
- };
- struct from_range_t { explicit from_range_t() = default; }; // Since C++23
- inline constexpr from_range_t from_range{}; // Since C++23
- }
- */
- #include <__assert> // all public C++ headers provide the assertion handler
- #include <__config>
- #include <__ranges/access.h>
- #include <__ranges/all.h>
- #include <__ranges/as_rvalue_view.h>
- #include <__ranges/chunk_by_view.h>
- #include <__ranges/common_view.h>
- #include <__ranges/concepts.h>
- #include <__ranges/counted.h>
- #include <__ranges/dangling.h>
- #include <__ranges/data.h>
- #include <__ranges/drop_view.h>
- #include <__ranges/drop_while_view.h>
- #include <__ranges/elements_view.h>
- #include <__ranges/empty.h>
- #include <__ranges/empty_view.h>
- #include <__ranges/enable_borrowed_range.h>
- #include <__ranges/enable_view.h>
- #include <__ranges/filter_view.h>
- #include <__ranges/from_range.h>
- #include <__ranges/iota_view.h>
- #include <__ranges/join_view.h>
- #include <__ranges/lazy_split_view.h>
- #include <__ranges/rbegin.h>
- #include <__ranges/ref_view.h>
- #include <__ranges/rend.h>
- #include <__ranges/repeat_view.h>
- #include <__ranges/reverse_view.h>
- #include <__ranges/single_view.h>
- #include <__ranges/size.h>
- #include <__ranges/split_view.h>
- #include <__ranges/subrange.h>
- #include <__ranges/take_view.h>
- #include <__ranges/take_while_view.h>
- #include <__ranges/to.h>
- #include <__ranges/transform_view.h>
- #include <__ranges/view_interface.h>
- #include <__ranges/views.h>
- #include <__ranges/zip_view.h>
- #include <version>
- #if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
- #include <__ranges/istream_view.h>
- #endif
- // standard-mandated includes
- // [ranges.syn]
- #include <compare>
- #include <initializer_list>
- #include <iterator>
- // [tuple.helper]
- #include <__tuple/tuple_element.h>
- #include <__tuple/tuple_size.h>
- #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
- # pragma GCC system_header
- #endif
- #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
- # include <cstdlib>
- # include <type_traits>
- #endif
- #endif // _LIBCPP_RANGES
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