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388cf58b31
- For `std::same_as`, add missing include of `<concepts>`. - For `std::convertible_to`, create a replacement in `common/concepts.h` and use that instead. This would also be found in `<concepts>`, but unlike `std::same_as`, `std::convertible_to` is not yet implemented in libc++, LLVM's STL implementation - not even in master. (In fact, `std::same_as` is the *only* concept currently implemented. For some reason.)
39 lines
1.0 KiB
C++
39 lines
1.0 KiB
C++
// Copyright 2020 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <type_traits>
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namespace Common {
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// Check if type is like an STL container
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template <typename T>
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concept IsSTLContainer = requires(T t) {
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typename T::value_type;
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typename T::iterator;
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typename T::const_iterator;
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// TODO(ogniK): Replace below is std::same_as<void> when MSVC supports it.
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t.begin();
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t.end();
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t.cbegin();
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t.cend();
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t.data();
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t.size();
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};
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// TODO: Replace with std::derived_from when the <concepts> header
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// is available on all supported platforms.
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template <typename Derived, typename Base>
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concept DerivedFrom = requires {
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std::is_base_of_v<Base, Derived>;
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std::is_convertible_v<const volatile Derived*, const volatile Base*>;
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};
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// TODO: Replace with std::convertible_to when libc++ implements it.
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template <typename From, typename To>
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concept ConvertibleTo = std::is_convertible_v<From, To>;
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} // namespace Common
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