50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
/*
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* Copyright 2019 by its authors. See AUTHORS.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef EFL_EINA_LOGICAL_HH
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#define EFL_EINA_LOGICAL_HH
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#include <type_traits>
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namespace efl { namespace eina { namespace _mpl {
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template <bool... N>
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struct or_;
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template <>
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struct or_<> : std::integral_constant<bool, false> {};
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template <bool B>
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struct or_<B> : std::integral_constant<bool, B> {};
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template <bool B1, bool B2, bool... Bs>
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struct or_<B1, B2, Bs...> : std::integral_constant<bool, B1 || B2 || or_<Bs...>::value> {};
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template <bool... N>
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struct and_;
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template <>
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struct and_<> : std::integral_constant<bool, true> {};
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template <bool B>
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struct and_<B> : std::integral_constant<bool, B> {};
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template <bool B1, bool B2, bool... Bs>
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struct and_<B1, B2, Bs...> : std::integral_constant<bool, B1 && B2 && and_<Bs...>::value> {};
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} } }
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#endif
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