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// Copyright Catch2 Authors
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.txt or copy at
// https://www.boost.org/LICENSE_1_0.txt)
// SPDX-License-Identifier: BSL-1.0
#pragma once
namespace Catch {
struct ISingleton {
virtual ~ISingleton(); // = default
};
void addSingleton( ISingleton* singleton );
void cleanupSingletons();
template<typename SingletonImplT, typename InterfaceT = SingletonImplT, typename MutableInterfaceT = InterfaceT>
class Singleton final : SingletonImplT, public ISingleton {
static auto getInternal() -> Singleton* {
static Singleton* s_instance = nullptr;
if( !s_instance ) {
s_instance = new Singleton;
addSingleton( s_instance );
}
return s_instance;
}
public:
static auto get() -> InterfaceT const& {
return *getInternal();
}
static auto getMutable() -> MutableInterfaceT& {
return *getInternal();
}
};
} // namespace Catch
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