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