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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,105 +1,108 @@ | ||
| use super::*; | ||
|
|
||
| #[doc(hidden)] | ||
| pub enum Param<T: Type<T>> { | ||
| Owned(T), | ||
| Borrowed(T::Abi), | ||
| } | ||
|
|
||
| impl<T: Type<T>> Param<T> { | ||
| pub fn abi(&self) -> T::Abi { | ||
| unsafe { | ||
| match self { | ||
| Self::Owned(item) => std::mem::transmute_copy(item), | ||
| Self::Borrowed(borrowed) => std::mem::transmute_copy(borrowed), | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| #[doc(hidden)] | ||
| pub trait CanInto<T>: Sized { | ||
| const QUERY: bool = false; | ||
| } | ||
|
|
||
| impl<T> CanInto<T> for T where T: Clone {} | ||
|
|
||
| #[doc(hidden)] | ||
| pub trait IntoParam<T: TypeKind, C = <T as TypeKind>::TypeKind>: Sized | ||
| /// Provides automatic parameter conversion in cases where the Windows API expects implicit conversion support. | ||
| /// | ||
| /// There is no need to implement this trait. Blanket implementations are provided for all applicable Windows types. | ||
| pub trait Param<T: TypeKind, C = <T as TypeKind>::TypeKind>: Sized | ||
| where | ||
| T: Type<T>, | ||
| { | ||
| unsafe fn into_param(self) -> Param<T>; | ||
| #[doc(hidden)] | ||
| unsafe fn param(self) -> ParamValue<T>; | ||
| } | ||
|
|
||
| impl<T> IntoParam<T> for Option<&T> | ||
| impl<T> Param<T> for Option<&T> | ||
| where | ||
| T: Type<T>, | ||
| { | ||
| unsafe fn into_param(self) -> Param<T> { | ||
| Param::Borrowed(match self { | ||
| unsafe fn param(self) -> ParamValue<T> { | ||
| ParamValue::Borrowed(match self { | ||
| Some(item) => std::mem::transmute_copy(item), | ||
| None => std::mem::zeroed(), | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| impl<T, U> IntoParam<T, ReferenceType> for &U | ||
| impl<T, U> Param<T, InterfaceType> for &U | ||
| where | ||
| T: TypeKind<TypeKind = ReferenceType> + Clone, | ||
| T: TypeKind<TypeKind = InterfaceType> + Clone, | ||
| T: Interface, | ||
| U: Interface, | ||
| U: CanInto<T>, | ||
| { | ||
| unsafe fn into_param(self) -> Param<T> { | ||
| unsafe fn param(self) -> ParamValue<T> { | ||
| if U::QUERY { | ||
| self.cast().map_or(Param::Borrowed(std::mem::zeroed()), |ok| Param::Owned(ok)) | ||
| self.cast().map_or(ParamValue::Borrowed(std::mem::zeroed()), |ok| ParamValue::Owned(ok)) | ||
| } else { | ||
| Param::Borrowed(std::mem::transmute_copy(self)) | ||
| ParamValue::Borrowed(std::mem::transmute_copy(self)) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl<T> IntoParam<T, ValueType> for &T | ||
| impl<T> Param<T, CloneType> for &T | ||
| where | ||
| T: TypeKind<TypeKind = ValueType> + Clone, | ||
| T: TypeKind<TypeKind = CloneType> + Clone, | ||
| { | ||
| unsafe fn into_param(self) -> Param<T> { | ||
| Param::Borrowed(std::mem::transmute_copy(self)) | ||
| unsafe fn param(self) -> ParamValue<T> { | ||
| ParamValue::Borrowed(std::mem::transmute_copy(self)) | ||
| } | ||
| } | ||
|
|
||
| impl<T, U> IntoParam<T, CopyType> for U | ||
| impl<T, U> Param<T, CopyType> for U | ||
| where | ||
| T: TypeKind<TypeKind = CopyType> + Clone, | ||
| U: TypeKind<TypeKind = CopyType> + Clone, | ||
| U: CanInto<T>, | ||
| { | ||
| unsafe fn into_param(self) -> Param<T> { | ||
| Param::Owned(std::mem::transmute_copy(&self)) | ||
| unsafe fn param(self) -> ParamValue<T> { | ||
| ParamValue::Owned(std::mem::transmute_copy(&self)) | ||
| } | ||
| } | ||
|
|
||
| impl IntoParam<PCWSTR> for &BSTR { | ||
| unsafe fn into_param(self) -> Param<PCWSTR> { | ||
| Param::Owned(PCWSTR(self.as_ptr())) | ||
| impl Param<PCWSTR> for &BSTR { | ||
| unsafe fn param(self) -> ParamValue<PCWSTR> { | ||
| ParamValue::Owned(PCWSTR(self.as_ptr())) | ||
| } | ||
| } | ||
|
|
||
| impl IntoParam<PCWSTR> for &HSTRING { | ||
| unsafe fn into_param(self) -> Param<PCWSTR> { | ||
| Param::Owned(PCWSTR(self.as_ptr())) | ||
| impl Param<PCWSTR> for &HSTRING { | ||
| unsafe fn param(self) -> ParamValue<PCWSTR> { | ||
| ParamValue::Owned(PCWSTR(self.as_ptr())) | ||
| } | ||
| } | ||
|
|
||
| impl IntoParam<PCWSTR> for PWSTR { | ||
| unsafe fn into_param(self) -> Param<PCWSTR> { | ||
| Param::Owned(PCWSTR(self.0)) | ||
| impl Param<PCWSTR> for PWSTR { | ||
| unsafe fn param(self) -> ParamValue<PCWSTR> { | ||
| ParamValue::Owned(PCWSTR(self.0)) | ||
| } | ||
| } | ||
|
|
||
| impl IntoParam<PCSTR> for PSTR { | ||
| unsafe fn into_param(self) -> Param<PCSTR> { | ||
| Param::Owned(PCSTR(self.0)) | ||
| impl Param<PCSTR> for PSTR { | ||
| unsafe fn param(self) -> ParamValue<PCSTR> { | ||
| ParamValue::Owned(PCSTR(self.0)) | ||
| } | ||
| } | ||
|
|
||
| #[doc(hidden)] | ||
| pub enum ParamValue<T: Type<T>> { | ||
| Owned(T), | ||
| Borrowed(T::Abi), | ||
| } | ||
|
|
||
| impl<T: Type<T>> ParamValue<T> { | ||
| pub fn abi(&self) -> T::Abi { | ||
| unsafe { | ||
| match self { | ||
| Self::Owned(item) => std::mem::transmute_copy(item), | ||
| Self::Borrowed(borrowed) => std::mem::transmute_copy(borrowed), | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| #[doc(hidden)] | ||
| pub trait CanInto<T>: Sized { | ||
| const QUERY: bool = false; | ||
| } | ||
|
|
||
| impl<T> CanInto<T> for T where T: Clone {} |
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