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master
src/hotspot/share/utilities/tuple.hpp
57 строк
2 KB
Quan Anh Mai
8306706: Support out-of-line code generation for MachNodes
23 май 2023, 20:06
23 май 2023, 20:06
ab241b3
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/* * Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_UTILITIES_TUPLE_HPP #define SHARE_UTILITIES_TUPLE_HPP #include <type_traits> template <class... Ts> class Tuple; template <> class Tuple<> {}; template <class T, class... Ts> class Tuple<T, Ts...> { private: T _first; Tuple<Ts...> _remaining; public: constexpr Tuple(const T& first, const Ts&... remaining) noexcept : _first(first), _remaining(remaining...) {} template <std::size_t I, std::enable_if_t<(I > 0), int> = 0> constexpr const auto& get() const noexcept { return _remaining.template get<I - 1>(); }; template <std::size_t I, std::enable_if_t<I == 0, int> = 0> constexpr const T& get() const noexcept { return _first; } }; #endif // SHARE_UTILITIES_TUPLE_HPP