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is_sorted_until.hpp
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1
2// Range v3 library
3//
4// Copyright Eric Niebler 2013-present
5// Copyright Gonzalo Brito Gadeschi 2014
6//
7// Use, modification and distribution is subject to the
8// Boost Software License, Version 1.0. (See accompanying
9// file LICENSE_1_0.txt or copy at
10// http://www.boost.org/LICENSE_1_0.txt)
11//
12// Project home: https://github.com/ericniebler/range-v3
13//
14// Implementation based on the code in libc++
15// http://http://libcxx.llvm.org/
16#ifndef RANGES_V3_ALGORITHM_IS_SORTED_UNTIL_HPP
17#define RANGES_V3_ALGORITHM_IS_SORTED_UNTIL_HPP
18
20
29#include <range/v3/utility/static_const.hpp>
30
31#include <range/v3/detail/prologue.hpp>
32
33namespace ranges
34{
37 RANGES_FUNC_BEGIN(is_sorted_until)
50 template(typename I, typename S, typename R = less, typename P = identity)(
51 requires forward_iterator<I> AND sentinel_for<S, I> AND
52 indirect_strict_weak_order<R, projected<I, P>>)
53 constexpr I RANGES_FUNC(is_sorted_until)(I first, S last, R pred = R{}, P proj = P{})
54 {
55 auto i = first;
56 if(first != last)
57 {
58 while(++i != last)
59 {
60 if(invoke(pred, invoke(proj, *i), invoke(proj, *first)))
61 return i;
62 first = i;
63 }
64 }
65 return i;
66 }
67
69 template(typename Rng, typename R = less, typename P = identity)(
70 requires forward_range<Rng> AND
71 indirect_strict_weak_order<R, projected<iterator_t<Rng>, P>>)
72 constexpr borrowed_iterator_t<Rng> //
73 RANGES_FUNC(is_sorted_until)(Rng && rng, R pred = R{}, P proj = P{})
74 {
75 return (*this)(begin(rng), end(rng), std::move(pred), std::move(proj));
76 }
77
78 RANGES_FUNC_END(is_sorted_until)
79
80 namespace cpp20
81 {
82 using ranges::is_sorted_until;
83 }
85} // namespace ranges
86
87#include <range/v3/detail/epilogue.hpp>
88
89#endif
typename Fn::template invoke< Args... > invoke
Evaluate the invocable Fn with the arguments Args.
Definition meta.hpp:541
front< Pair > first
Retrieve the first element of the pair Pair.
Definition meta.hpp:2251
bool_<(T::type::value< U::type::value)> less
A Boolean integral constant wrapper around true if T::type::value is less than U::type::value; false,...
Definition meta.hpp:255