27 lines
690 B
C++
27 lines
690 B
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_DOM_ISENUMCASE_H
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#define MOZILLA_DOM_ISENUMCASE_H
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#include <optional>
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#include <type_traits>
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namespace mozilla {
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template <class T>
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bool IsEnumCase(T);
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template <class E>
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inline constexpr std::optional<E> AsEnumCase(
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const std::underlying_type_t<E> raw) {
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const auto ret = static_cast<E>(raw);
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if (!IsEnumCase(ret)) return {};
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return ret;
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}
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} // namespace mozilla
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#endif
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