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71 lines
2.1 KiB
C++
71 lines
2.1 KiB
C++
/*
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* Copyright (c) 2022, Tim Flynn <trflynn89@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/HashMap.h>
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#include <AK/Optional.h>
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#include <AK/Variant.h>
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#include <AK/Vector.h>
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#include <LibCore/SharedCircularQueue.h>
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#pragma once
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// These concepts are used to help the compiler distinguish between specializations that would be
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// ambiguous otherwise. For example, if the specializations for int and Vector<T> were declared as
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// follows:
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//
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// template<> ErrorOr<int> decode(Decoder& decoder);
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// template<typename T> ErrorOr<Vector<T>> decode(Decoder& decoder);
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//
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// Then decode<int>() would be ambiguous because either declaration could work (the compiler would
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// not be able to distinguish if you wanted to decode an int or a Vector of int).
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namespace IPC::Concepts {
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namespace Detail {
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template<typename T>
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constexpr inline bool IsHashMap = false;
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template<typename K, typename V, typename KeyTraits, typename ValueTraits, bool IsOrdered>
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constexpr inline bool IsHashMap<HashMap<K, V, KeyTraits, ValueTraits, IsOrdered>> = true;
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template<typename T>
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constexpr inline bool IsOptional = false;
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template<typename T>
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constexpr inline bool IsOptional<Optional<T>> = true;
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template<typename T>
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constexpr inline bool IsSharedSingleProducerCircularQueue = false;
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template<typename T, size_t Size>
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constexpr inline bool IsSharedSingleProducerCircularQueue<Core::SharedSingleProducerCircularQueue<T, Size>> = true;
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template<typename T>
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constexpr inline bool IsVariant = false;
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template<typename... Ts>
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constexpr inline bool IsVariant<Variant<Ts...>> = true;
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template<typename T>
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constexpr inline bool IsVector = false;
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template<typename T>
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constexpr inline bool IsVector<Vector<T>> = true;
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}
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template<typename T>
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concept HashMap = Detail::IsHashMap<T>;
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template<typename T>
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concept Optional = Detail::IsOptional<T>;
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template<typename T>
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concept SharedSingleProducerCircularQueue = Detail::IsSharedSingleProducerCircularQueue<T>;
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template<typename T>
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concept Variant = Detail::IsVariant<T>;
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template<typename T>
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concept Vector = Detail::IsVector<T>;
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}
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