Atmosphere/libraries/libstratosphere/include/stratosphere/sf/sf_object_factory.hpp

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/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <vapours.hpp>
#include <stratosphere/sf/sf_common.hpp>
#include <stratosphere/sf/impl/sf_impl_template_base.hpp>
#include <stratosphere/sf/sf_object_impl_factory.hpp>
#include <stratosphere/sf/sf_memory_resource.hpp>
#include <stratosphere/sf/sf_default_allocation_policy.hpp>
namespace ams::sf {
namespace impl {
template<typename>
struct IsSmartPointer : public std::false_type{};
template<typename T>
struct IsSmartPointer<SharedPointer<T>> : public std::true_type{};
template<typename T>
struct IsSmartPointer<std::shared_ptr<T>> : public std::true_type{};
template<typename T, typename D>
struct IsSmartPointer<std::unique_ptr<T, D>> : public std::true_type{};
template<typename Impl>
struct UnmanagedEmplaceImplHolderBaseGetter {
using Type = Impl;
};
template<typename Impl> requires (std::is_abstract<Impl>::value)
struct UnmanagedEmplaceImplHolderBaseGetter<Impl> {
class Impl2 : public Impl {
public:
using Impl::Impl;
private:
constexpr virtual void AddReference() override { /* ... */ }
constexpr virtual void Release() override { /* ... */ }
};
using Type = Impl2;
};
template<typename Impl>
class UnmanagedEmplacedImplHolder {
template<typename, typename, typename, typename, typename>
friend class impl::ImplTemplateBaseT;
private:
using Impl2 = typename UnmanagedEmplaceImplHolderBaseGetter<Impl>::Type;
static_assert(!std::is_abstract<Impl2>::value);
private:
Impl2 m_impl;
private:
template<typename... Args>
constexpr explicit UnmanagedEmplacedImplHolder(Args &&... args) : m_impl(std::forward<Args>(args)...) { /* ... */ }
public:
static constexpr Impl *GetImplPointer(UnmanagedEmplacedImplHolder *holder) {
return std::addressof(holder->m_impl);
}
};
template<typename Impl>
class EmplacedImplHolder : private Impl {
template<typename, typename, typename, typename, typename>
friend class impl::ImplTemplateBaseT;
private:
template<typename... Args>
constexpr explicit EmplacedImplHolder(Args &&... args) : Impl(std::forward<Args>(args)...) { /* ... */ }
public:
static constexpr Impl *GetImplPointer(EmplacedImplHolder *holder) {
return holder;
}
template<typename Interface>
static constexpr Impl *GetEmplacedImplPointerImpl(const SharedPointer<Interface> &sp) {
using Base = impl::ImplTemplateBase<Interface, Interface, EmplacedImplHolder, EmplacedImplHolder>;
return static_cast<Base *>(sp.Get());
}
};
template<typename Impl> requires (IsSmartPointer<Impl>::value)
class EmplacedImplHolder<Impl> : private Impl {
template<typename, typename, typename, typename, typename>
friend class impl::ImplTemplateBaseT;
private:
template<typename... Args>
constexpr explicit EmplacedImplHolder(Args &&... args) : Impl(std::forward<Args>(args)...) { /* ... */ }
public:
static constexpr auto *GetImplPointer(EmplacedImplHolder *holder) {
return static_cast<Impl *>(holder)->operator ->();
}
template<typename Interface>
static constexpr Impl *GetEmplacedImplPointerImpl(const SharedPointer<Interface> &sp) {
using Base = impl::ImplTemplateBase<Interface, Interface, EmplacedImplHolder, EmplacedImplHolder>;
return static_cast<Base *>(sp.Get());
}
};
template<typename T>
using SmartPointerHolder = EmplacedImplHolder<T>;
template<typename T>
class ManagedPointerHolder {
template<typename, typename, typename, typename, typename>
friend class impl::ImplTemplateBaseT;
private:
T *m_p;
private:
constexpr explicit ManagedPointerHolder(T *p) : m_p(p) { /* ... */ }
constexpr ~ManagedPointerHolder() { m_p->Release(); }
static constexpr T *GetImplPointer(ManagedPointerHolder *holder) {
return holder->m_p;
}
};
template<typename T>
class UnmanagedPointerHolder {
template<typename, typename, typename, typename, typename>
friend class impl::ImplTemplateBaseT;
private:
T *m_p;
private:
constexpr explicit UnmanagedPointerHolder(T *p) : m_p(p) { /* ... */ }
static constexpr T *GetImplPointer(UnmanagedPointerHolder *holder) {
return holder->m_p;
}
};
}
template<typename Interface, typename Impl>
class UnmanagedServiceObject final : public impl::ImplTemplateBase<Interface, Interface, impl::UnmanagedEmplacedImplHolder<Impl>, impl::UnmanagedEmplacedImplHolder<Impl>> {
private:
using ImplBase = impl::ImplTemplateBase<Interface, Interface, impl::UnmanagedEmplacedImplHolder<Impl>, impl::UnmanagedEmplacedImplHolder<Impl>>;
public:
using ImplBase::ImplBase;
constexpr virtual void AddReference() override { /* ... */ }
constexpr virtual void Release() override { /* ... */ }
constexpr Impl &GetImpl() { return *impl::UnmanagedEmplacedImplHolder<Impl>::GetImplPointer(this); }
constexpr SharedPointer<Interface> GetShared() { return SharedPointer<Interface>(this, false); }
};
template<typename Interface, typename T>
class UnmanagedServiceObjectByPointer final : public impl::ImplTemplateBase<Interface, Interface, impl::UnmanagedPointerHolder<T>, impl::UnmanagedPointerHolder<T>> {
private:
using ImplBase = impl::ImplTemplateBase<Interface, Interface, impl::UnmanagedPointerHolder<T>, impl::UnmanagedPointerHolder<T>>;
public:
constexpr explicit UnmanagedServiceObjectByPointer(T *ptr) : ImplBase(ptr) { /* ... */ }
constexpr virtual void AddReference() override { /* ... */ }
constexpr virtual void Release() override { /* ... */ }
constexpr SharedPointer<Interface> GetShared() { return SharedPointer<Interface>(this, false); }
};
template<typename Policy>
class ObjectFactory;
template<typename Interface, typename Impl>
class EmplacedRef : public SharedPointer<Interface> {
template<typename> friend class ObjectFactory;
private:
constexpr explicit EmplacedRef(Interface *ptr, bool incref) : SharedPointer<Interface>(ptr, incref) { /* ... */ }
public:
constexpr EmplacedRef() { /* ... */ }
constexpr Impl &GetImpl() const {
return *impl::EmplacedImplHolder<Impl>::template GetEmplacedImplPointerImpl<Interface>(*this);
}
};
template<typename Policy> requires (!IsStatefulPolicy<Policy>)
class ObjectFactory<Policy> {
private:
template<typename Interface, typename Holder, typename T>
static constexpr SharedPointer<Interface> CreateSharedForPointer(T t) {
using Base = impl::ImplTemplateBase<Interface, Interface, Holder, Holder>;
return SharedPointer<Interface>(ObjectImplFactory<Base, Policy>::Create(std::forward<T>(t)), false);
}
public:
template<typename Interface, typename Impl, typename... Args>
static constexpr EmplacedRef<Interface, Impl> CreateSharedEmplaced(Args &&... args) {
using Base = impl::ImplTemplateBase<Interface, Interface, impl::EmplacedImplHolder<Impl>, impl::EmplacedImplHolder<Impl>>;
return EmplacedRef<Interface, Impl>(ObjectImplFactory<Base, Policy>::Create(std::forward<Args>(args)...), false);
}
template<typename T, typename... Args>
static constexpr SharedPointer<T> CreateUserSharedObject(Args &&... args) {
return SharedPointer<T>(ObjectImplFactory<T, Policy>::Create(std::forward<Args>(args)...), false);
}
template<typename Impl, typename Interface>
static constexpr Impl *GetEmplacedImplPointer(const SharedPointer<Interface> &sp) {
return impl::EmplacedImplHolder<Impl>::template GetEmplacedImplPointerImpl<Interface>(sp);
}
template<typename Interface, typename Smart>
static constexpr SharedPointer<Interface> CreateShared(Smart &&sp) {
return CreateSharedForPointer<Interface, impl::SmartPointerHolder<typename std::decay<decltype(sp)>::type>>(std::forward<Smart>(sp));
}
template<typename Interface, typename T>
static constexpr SharedPointer<Interface> CreateShared(T *p) {
return CreateSharedForPointer<Interface, impl::ManagedPointerHolder<T>>(p);
}
template<typename Interface, typename T>
static constexpr SharedPointer<Interface> CreateSharedWithoutManagement(T *p) {
return CreateSharedForPointer<Interface, impl::UnmanagedPointerHolder<T>>(p);
}
};
template<typename Policy> requires (IsStatefulPolicy<Policy>)
class ObjectFactory<Policy> {
public:
using Allocator = typename Policy::Allocator;
private:
template<typename Interface, typename Holder, typename T>
static constexpr SharedPointer<Interface> CreateSharedForPointer(Allocator *a, T t) {
using Base = impl::ImplTemplateBase<Interface, Interface, Holder, Holder>;
return SharedPointer<Interface>(ObjectImplFactory<Base, Policy>::Create(a, std::forward<T>(t)), false);
}
public:
template<typename Interface, typename Impl, typename... Args>
static constexpr EmplacedRef<Interface, Impl> CreateSharedEmplaced(Allocator *a, Args &&... args) {
using Base = impl::ImplTemplateBase<Interface, Interface, impl::EmplacedImplHolder<Impl>, impl::EmplacedImplHolder<Impl>>;
return EmplacedRef<Interface, Impl>(ObjectImplFactory<Base, Policy>::Create(a, std::forward<Args>(args)...), false);
}
template<typename T, typename... Args>
static constexpr SharedPointer<T> CreateUserSharedObject(Allocator *a, Args &&... args) {
return SharedPointer<T>(ObjectImplFactory<T, Policy>::Create(a, std::forward<Args>(args)...), false);
}
template<typename Impl, typename Interface>
static constexpr Impl *GetEmplacedImplPointer(const SharedPointer<Interface> &sp) {
return impl::EmplacedImplHolder<Impl>::template GetEmplacedImplPointerImpl<Interface>(sp);
}
template<typename Interface, typename Smart>
static constexpr SharedPointer<Interface> CreateShared(Allocator *a, Smart &&sp) {
return CreateSharedForPointer<Interface, impl::SmartPointerHolder<typename std::decay<decltype(sp)>::type>>(a, std::forward<Smart>(sp));
}
template<typename Interface, typename T>
static constexpr SharedPointer<Interface> CreateShared(Allocator *a, T *p) {
return CreateSharedForPointer<Interface, impl::ManagedPointerHolder<T>>(a, p);
}
template<typename Interface, typename T>
static constexpr SharedPointer<Interface> CreateSharedWithoutManagement(Allocator *a, T *p) {
return CreateSharedForPointer<Interface, impl::UnmanagedPointerHolder<T>>(a, p);
}
};
template<typename Policy>
class StatefulObjectFactory {
public:
using Allocator = typename Policy::Allocator;
private:
using StaticObjectFactory = ObjectFactory<Policy>;
private:
Allocator *m_allocator;
public:
constexpr explicit StatefulObjectFactory(Allocator *a) : m_allocator(a) { /* ... */ }
template<typename Interface, typename Impl, typename... Args>
constexpr EmplacedRef<Interface, Impl> CreateSharedEmplaced(Args &&... args) {
return StaticObjectFactory::template CreateSharedEmplaced<Interface, Impl>(m_allocator, std::forward<Args>(args)...);
}
template<typename Impl, typename Interface>
static constexpr Impl *GetEmplacedImplPointer(const SharedPointer<Interface> &sp) {
return StaticObjectFactory::template GetEmplacedImplPointer<Impl, Interface>(sp);
}
template<typename Interface, typename Smart>
constexpr SharedPointer<Interface> CreateShared(Allocator *a, Smart &&sp) {
return StaticObjectFactory::template CreateShared<Interface>(m_allocator, std::forward<Smart>(sp));
}
template<typename Interface, typename T>
constexpr SharedPointer<Interface> CreateShared(Allocator *a, T *p) {
return StaticObjectFactory::template CreateShared<Interface>(m_allocator, p);
}
template<typename Interface, typename T>
constexpr SharedPointer<Interface> CreateSharedWithoutManagement(Allocator *a, T *p) {
return StaticObjectFactory::template CreateSharedWithoutManagement<Interface>(m_allocator, p);
}
};
using DefaultObjectFactory = ObjectFactory<DefaultAllocationPolicy>;
using MemoryResourceObjectFactory = ObjectFactory<MemoryResourceAllocationPolicy>;
template<typename Interface, typename Impl, typename... Args>
inline EmplacedRef<Interface, Impl> CreateSharedObjectEmplaced(Args &&... args) {
return DefaultObjectFactory::CreateSharedEmplaced<Interface, Impl>(std::forward<Args>(args)...);
}
template<typename Interface, typename Impl, typename... Args>
inline EmplacedRef<Interface, Impl> CreateSharedObjectEmplaced(MemoryResource *mr, Args &&... args) {
return MemoryResourceObjectFactory::CreateSharedEmplaced<Interface, Impl>(mr, std::forward<Args>(args)...);
}
template<typename Interface, typename Smart>
inline SharedPointer<Interface> CreateSharedObject(Smart &&sp) {
return DefaultObjectFactory::CreateShared<Interface, Smart>(std::forward<Smart>(sp));
}
template<typename Interface, typename Smart>
inline SharedPointer<Interface> CreateSharedObject(MemoryResource *mr, Smart &&sp) {
return MemoryResourceObjectFactory::CreateShared<Interface, Smart>(mr, std::forward<Smart>(sp));
}
template<typename Interface, typename T>
inline SharedPointer<Interface> CreateSharedObject(T *ptr) {
return DefaultObjectFactory::CreateShared<Interface, T>(std::move(ptr));
}
template<typename Interface, typename T>
inline SharedPointer<Interface> CreateSharedObjectWithoutManagement(T *ptr) {
return DefaultObjectFactory::CreateSharedWithoutManagement<Interface, T>(std::move(ptr));
}
template<typename Interface, typename T>
inline SharedPointer<Interface> CreateSharedObjectWithoutManagement(MemoryResource *mr, T *ptr) {
return DefaultObjectFactory::CreateSharedWithoutManagement<Interface, T>(mr, std::move(ptr));
}
}