mirror of https://github.com/axmolengine/axmol.git
99 lines
2.8 KiB
C++
99 lines
2.8 KiB
C++
/// \file
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// Range v3 library
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//
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// Copyright Eric Niebler 2013-present
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//
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// Use, modification and distribution is subject to the
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// Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// Project home: https://github.com/ericniebler/range-v3
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//
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#ifndef RANGES_V3_FUNCTIONAL_NOT_FN_HPP
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#define RANGES_V3_FUNCTIONAL_NOT_FN_HPP
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#include <type_traits>
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#include <concepts/concepts.hpp>
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#include <range/v3/range_fwd.hpp>
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#include <range/v3/functional/concepts.hpp>
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#include <range/v3/functional/invoke.hpp>
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#include <range/v3/utility/static_const.hpp>
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#include <range/v3/detail/prologue.hpp>
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namespace ranges
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{
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/// \addtogroup group-functional
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/// @{
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template<typename FD>
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struct logical_negate
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{
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private:
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CPP_assert(same_as<FD, detail::decay_t<FD>> && move_constructible<FD>);
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RANGES_NO_UNIQUE_ADDRESS FD pred_;
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public:
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CPP_member
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constexpr CPP_ctor(logical_negate)()( //
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noexcept(std::is_nothrow_default_constructible<FD>::value) //
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requires default_constructible<FD>)
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{}
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template(typename T)(
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requires (!same_as<detail::decay_t<T>, logical_negate>) AND
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constructible_from<FD, T>)
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constexpr explicit logical_negate(T && pred)
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: pred_(static_cast<T &&>(pred))
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{}
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template(typename... Args)(
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requires predicate<FD &, Args...>)
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constexpr bool operator()(Args &&... args) &
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{
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return !invoke(pred_, static_cast<Args &&>(args)...);
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}
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/// \overload
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template(typename... Args)(
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requires predicate<FD const &, Args...>)
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constexpr bool operator()(Args &&... args) const &
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{
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return !invoke(pred_, static_cast<Args &&>(args)...);
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}
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/// \overload
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template(typename... Args)(
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requires predicate<FD, Args...>)
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constexpr bool operator()(Args &&... args) &&
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{
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return !invoke(static_cast<FD &&>(pred_), static_cast<Args &&>(args)...);
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}
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};
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struct not_fn_fn
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{
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template(typename Pred)(
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requires move_constructible<detail::decay_t<Pred>> AND
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constructible_from<detail::decay_t<Pred>, Pred>)
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constexpr logical_negate<detail::decay_t<Pred>> operator()(Pred && pred) const
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{
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return logical_negate<detail::decay_t<Pred>>{(Pred &&) pred};
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}
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};
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/// \ingroup group-functional
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/// \sa `not_fn_fn`
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RANGES_INLINE_VARIABLE(not_fn_fn, not_fn)
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namespace cpp20
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{
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using ranges::not_fn;
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}
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/// @}
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} // namespace ranges
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#include <range/v3/detail/epilogue.hpp>
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#endif
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