mirror of
https://github.com/darlinghq/darling-libcxx.git
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7c3769df62
to reflect the new license. These used slightly different spellings that defeated my regular expressions. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@351648 91177308-0d34-0410-b5e6-96231b3b80d8
85 lines
2.8 KiB
C++
85 lines
2.8 KiB
C++
//===----------------------------------------------------------------------===//
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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 TRANSPARENT_H
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#define TRANSPARENT_H
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#include "test_macros.h"
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// testing transparent
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#if TEST_STD_VER > 11
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struct transparent_less
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{
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template <class T, class U>
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constexpr auto operator()(T&& t, U&& u) const
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noexcept(noexcept(std::forward<T>(t) < std::forward<U>(u)))
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-> decltype (std::forward<T>(t) < std::forward<U>(u))
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{ return std::forward<T>(t) < std::forward<U>(u); }
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using is_transparent = void; // correct
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};
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struct transparent_less_not_referenceable
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{
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template <class T, class U>
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constexpr auto operator()(T&& t, U&& u) const
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noexcept(noexcept(std::forward<T>(t) < std::forward<U>(u)))
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-> decltype (std::forward<T>(t) < std::forward<U>(u))
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{ return std::forward<T>(t) < std::forward<U>(u); }
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using is_transparent = void () const &; // it's a type; a weird one, but a type
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};
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struct transparent_less_no_type
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{
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template <class T, class U>
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constexpr auto operator()(T&& t, U&& u) const
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noexcept(noexcept(std::forward<T>(t) < std::forward<U>(u)))
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-> decltype (std::forward<T>(t) < std::forward<U>(u))
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{ return std::forward<T>(t) < std::forward<U>(u); }
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private:
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// using is_transparent = void; // error - should exist
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};
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struct transparent_less_private
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{
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template <class T, class U>
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constexpr auto operator()(T&& t, U&& u) const
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noexcept(noexcept(std::forward<T>(t) < std::forward<U>(u)))
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-> decltype (std::forward<T>(t) < std::forward<U>(u))
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{ return std::forward<T>(t) < std::forward<U>(u); }
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private:
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using is_transparent = void; // error - should be accessible
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};
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struct transparent_less_not_a_type
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{
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template <class T, class U>
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constexpr auto operator()(T&& t, U&& u) const
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noexcept(noexcept(std::forward<T>(t) < std::forward<U>(u)))
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-> decltype (std::forward<T>(t) < std::forward<U>(u))
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{ return std::forward<T>(t) < std::forward<U>(u); }
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int is_transparent; // error - should be a type
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};
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struct C2Int { // comparable to int
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C2Int() : i_(0) {}
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C2Int(int i): i_(i) {}
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int get () const { return i_; }
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private:
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int i_;
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};
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bool operator <(int rhs, const C2Int& lhs) { return rhs < lhs.get(); }
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bool operator <(const C2Int& rhs, const C2Int& lhs) { return rhs.get() < lhs.get(); }
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bool operator <(const C2Int& rhs, int lhs) { return rhs.get() < lhs; }
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#endif
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#endif // TRANSPARENT_H
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