123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314 |
- #pragma once
- #include <type_traits>
- #include <utility>
- template<typename __ResourceTraits, typename __LambdaReleasor = void>
- class ResourceOwned {
- private:
- using __HandleType = typename __ResourceTraits::HandleType;
- static_assert(std::is_pod_v<__HandleType>);
- __HandleType _Handle;
- __LambdaReleasor _Releasor;
- public:
- ResourceOwned(__LambdaReleasor&& Releasor) noexcept :
- _Handle(__ResourceTraits::InvalidValue),
- _Releasor(std::forward<__LambdaReleasor>(Releasor)) {}
- ResourceOwned(const __HandleType& Handle, __LambdaReleasor&& Releasor) noexcept :
- _Handle(Handle),
- _Releasor(std::forward<__LambdaReleasor>(Releasor)) {}
-
-
-
-
- ResourceOwned(__ResourceTraits, __LambdaReleasor&& Releasor) noexcept :
- _Handle(__ResourceTraits::InvalidValue),
- _Releasor(std::forward<__LambdaReleasor>(Releasor)) {}
-
-
-
- ResourceOwned(__ResourceTraits, const __HandleType& Handle, __LambdaReleasor&& Releasor) noexcept :
- _Handle(Handle),
- _Releasor(std::forward<__LambdaReleasor>(Releasor)) {}
-
-
-
-
- ResourceOwned(const ResourceOwned<__ResourceTraits, __LambdaReleasor>& Other) = delete;
-
-
-
- ResourceOwned(ResourceOwned<__ResourceTraits, __LambdaReleasor>&& Other) noexcept :
- _Handle(Other._Handle),
- _Releasor(std::move(Other._Releasor))
- {
- Other._Handle = __ResourceTraits::InvalidValue;
- }
-
-
-
-
- ResourceOwned<__ResourceTraits, __LambdaReleasor>& operator=(const ResourceOwned<__ResourceTraits, __LambdaReleasor>& Other) = delete;
-
-
-
- ResourceOwned<__ResourceTraits, __LambdaReleasor>& operator=(ResourceOwned<__ResourceTraits, __LambdaReleasor>&& Other) noexcept {
- _Handle = Other._Handle;
- _Releasor = std::move(Other._Releasor);
- Other._Handle = __ResourceTraits::InvalidValue;
- return *this;
- }
- [[nodiscard]]
- operator const __HandleType&() const noexcept {
- return _Handle;
- }
- template<typename __AsType, bool __IsPointer = std::is_pointer_v<__HandleType>, typename = std::enable_if_t<__IsPointer>>
- [[nodiscard]]
- __AsType As() const noexcept {
- return reinterpret_cast<__AsType>(_Handle);
- }
- template<bool __IsPointer = std::is_pointer_v<__HandleType>, typename = typename std::enable_if_t<__IsPointer>>
- [[nodiscard]]
- __HandleType operator->() const noexcept {
- return _Handle;
- }
- [[nodiscard]]
- bool IsValid() const noexcept {
- return __ResourceTraits::IsValid(_Handle);
- }
- [[nodiscard]]
- const __HandleType& Get() const noexcept {
- return _Handle;
- }
- template<typename __ReturnType = __HandleType*>
- [[nodiscard]]
- __ReturnType GetAddressOf() noexcept {
- return reinterpret_cast<__ReturnType>(&_Handle);
- }
- void TakeOver(const __HandleType& Handle) {
- if (__ResourceTraits::IsValid(_Handle) == true) {
- _Releasor(_Handle);
- }
- _Handle = Handle;
- }
- void Discard() noexcept {
- _Handle = __ResourceTraits::InvalidValue;
- }
- [[nodiscard]]
- __HandleType Transfer() noexcept {
- __HandleType t = _Handle;
- _Handle = __ResourceTraits::InvalidValue;
- return t;
- }
- void Release() {
- if (__ResourceTraits::IsValid(_Handle)) {
- _Releasor(_Handle);
- _Handle = __ResourceTraits::InvalidValue;
- }
- }
- ~ResourceOwned() {
- if (__ResourceTraits::IsValid(_Handle)) {
- _Releasor(_Handle);
- _Handle = __ResourceTraits::InvalidValue;
- }
- }
- };
- template<typename __ResourceTraits>
- class ResourceOwned<__ResourceTraits, void> {
- private:
- using __HandleType = typename __ResourceTraits::HandleType;
- static_assert(std::is_pod_v<__HandleType>);
- __HandleType _Handle;
- public:
- ResourceOwned() noexcept :
- _Handle(__ResourceTraits::InvalidValue) {}
- ResourceOwned(const __HandleType& Handle) noexcept :
- _Handle(Handle) {}
-
-
-
-
- explicit ResourceOwned(__ResourceTraits) noexcept :
- _Handle(__ResourceTraits::InvalidValue) {}
-
-
-
- ResourceOwned(__ResourceTraits, const __HandleType& Handle) noexcept :
- _Handle(Handle) {}
-
-
-
-
- ResourceOwned(const ResourceOwned<__ResourceTraits, void>& Other) = delete;
-
-
-
- ResourceOwned(ResourceOwned<__ResourceTraits, void>&& Other) noexcept :
- _Handle(Other._Handle) {
- Other._Handle = __ResourceTraits::InvalidValue;
- }
-
-
-
-
- ResourceOwned<__ResourceTraits, void>& operator=(const ResourceOwned<__ResourceTraits, void>& Other) = delete;
-
-
-
- ResourceOwned<__ResourceTraits, void>& operator=(ResourceOwned<__ResourceTraits, void>&& Other) noexcept {
- _Handle = Other._Handle;
- Other._Handle = __ResourceTraits::InvalidValue;
- return *this;
- }
- [[nodiscard]]
- operator const __HandleType&() const noexcept {
- return _Handle;
- }
- template<typename __AsType, bool __IsPointer = std::is_pointer_v<__HandleType>, typename = typename std::enable_if_t<__IsPointer>>
- [[nodiscard]]
- __AsType As() const noexcept {
- return reinterpret_cast<__AsType>(_Handle);
- }
- template<bool __IsPointer = std::is_pointer_v<__HandleType>, typename = typename std::enable_if_t<__IsPointer>>
- [[nodiscard]]
- __HandleType operator->() const noexcept {
- return _Handle;
- }
- [[nodiscard]]
- bool IsValid() const noexcept {
- return __ResourceTraits::IsValid(_Handle);
- }
- [[nodiscard]]
- const __HandleType& Get() const noexcept {
- return _Handle;
- }
- template<typename __ReturnType = __HandleType*>
- [[nodiscard]]
- __ReturnType GetAddressOf() noexcept {
- return reinterpret_cast<__ReturnType>(&_Handle);
- }
- void TakeOver(const __HandleType& Handle) {
- if (__ResourceTraits::IsValid(_Handle) == true) {
- __ResourceTraits::Releasor(_Handle);
- }
- _Handle = Handle;
- }
- void Discard() noexcept {
- _Handle = __ResourceTraits::InvalidValue;
- }
- [[nodiscard]]
- __HandleType Transfer() noexcept {
- __HandleType t = _Handle;
- _Handle = __ResourceTraits::InvalidValue;
- return t;
- }
- void Release() {
- if (__ResourceTraits::IsValid(_Handle)) {
- __ResourceTraits::Releasor(_Handle);
- _Handle = __ResourceTraits::InvalidValue;
- }
- }
- ~ResourceOwned() {
- if (__ResourceTraits::IsValid(_Handle)) {
- __ResourceTraits::Releasor(_Handle);
- _Handle = __ResourceTraits::InvalidValue;
- }
- }
- };
- template<typename __ResourceTraits>
- ResourceOwned(__ResourceTraits) ->
- ResourceOwned<__ResourceTraits, void>;
- template<typename __ResourceTraits, typename __ArgType>
- ResourceOwned(__ResourceTraits, __ArgType&&) ->
- ResourceOwned<
- __ResourceTraits,
- std::conditional_t<
- std::is_same_v<std::remove_cv_t<std::remove_reference_t<__ArgType>>, typename __ResourceTraits::HandleType> == false,
- std::remove_reference_t<__ArgType>,
- void
- >
- >;
- template<typename __ResourceTraits, typename __LambdaReleasor>
- ResourceOwned(__ResourceTraits, const typename __ResourceTraits::HandleType&, __LambdaReleasor&&) ->
- ResourceOwned<__ResourceTraits, std::remove_reference_t<__LambdaReleasor>>;
- template<typename __ClassType>
- struct CppObjectTraits {
- using HandleType = __ClassType*;
- static inline const HandleType InvalidValue = nullptr;
- [[nodiscard]]
- static bool IsValid(const HandleType& Handle) noexcept {
- return Handle != InvalidValue;
- }
- static void Releasor(const HandleType& Handle) {
- delete Handle;
- }
- };
- template<typename __ClassType>
- struct CppDynamicArrayTraits {
- using HandleType = __ClassType*;
- static inline const HandleType InvalidValue = nullptr;
- [[nodiscard]]
- static bool IsValid(const HandleType& Handle) noexcept {
- return Handle != InvalidValue;
- }
- static void Releasor(const HandleType& Handle) {
- delete[] Handle;
- }
- };
|