diff options
Diffstat (limited to 'vendor/windows-core/src/param.rs')
| -rw-r--r-- | vendor/windows-core/src/param.rs | 76 |
1 files changed, 0 insertions, 76 deletions
diff --git a/vendor/windows-core/src/param.rs b/vendor/windows-core/src/param.rs deleted file mode 100644 index 5ebf3add..00000000 --- a/vendor/windows-core/src/param.rs +++ /dev/null @@ -1,76 +0,0 @@ -use super::*; -use core::mem::transmute_copy; -use core::mem::zeroed; - -/// 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>, -{ - #[doc(hidden)] - unsafe fn param(self) -> ParamValue<T>; -} - -impl<T> Param<T> for Option<&T> -where - T: Type<T>, -{ - unsafe fn param(self) -> ParamValue<T> { - unsafe { - ParamValue::Borrowed(match self { - Some(item) => transmute_copy(item), - None => zeroed(), - }) - } - } -} - -impl<T> Param<T> for InterfaceRef<'_, T> -where - T: Type<T>, -{ - unsafe fn param(self) -> ParamValue<T> { - unsafe { ParamValue::Borrowed(transmute_copy(&self)) } - } -} - -impl<T, U> Param<T, InterfaceType> for &U -where - T: TypeKind<TypeKind = InterfaceType> + Clone, - T: Interface, - U: Interface, - U: imp::CanInto<T>, -{ - unsafe fn param(self) -> ParamValue<T> { - unsafe { - if U::QUERY { - self.cast() - .map_or(ParamValue::Borrowed(zeroed()), |ok| ParamValue::Owned(ok)) - } else { - ParamValue::Borrowed(transmute_copy(self)) - } - } - } -} - -impl<T> Param<T, CloneType> for &T -where - T: TypeKind<TypeKind = CloneType> + Clone, -{ - unsafe fn param(self) -> ParamValue<T> { - unsafe { ParamValue::Borrowed(transmute_copy(self)) } - } -} - -impl<T, U> Param<T, CopyType> for U -where - T: TypeKind<TypeKind = CopyType> + Clone, - U: TypeKind<TypeKind = CopyType> + Clone, - U: imp::CanInto<T>, -{ - unsafe fn param(self) -> ParamValue<T> { - unsafe { ParamValue::Owned(transmute_copy(&self)) } - } -} |
