diff options
Diffstat (limited to 'vendor/windows-core/src/out_param.rs')
| -rw-r--r-- | vendor/windows-core/src/out_param.rs | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/vendor/windows-core/src/out_param.rs b/vendor/windows-core/src/out_param.rs deleted file mode 100644 index 828746c1..00000000 --- a/vendor/windows-core/src/out_param.rs +++ /dev/null @@ -1,63 +0,0 @@ -use super::*; -use core::mem::{take, transmute_copy, zeroed}; - -/// Provides automatic parameter conversion in cases where the Windows API expects implicit conversion support. -/// -/// This is a mutable version of [Param] meant to support out parameters. -/// There is no need to implement this trait. Blanket implementations are provided for all applicable Windows types. -pub trait OutParam<T: TypeKind, C = <T as TypeKind>::TypeKind>: Sized -where - T: Type<T>, -{ - #[doc(hidden)] - unsafe fn borrow_mut(&self) -> OutRef<'_, T>; -} - -impl<T> OutParam<T, CloneType> for &mut T -where - T: TypeKind<TypeKind = CloneType> + Clone + Default, -{ - unsafe fn borrow_mut(&self) -> OutRef<'_, T> { - unsafe { - let this: &mut T = transmute_copy(self); - take(this); - transmute_copy(self) - } - } -} - -impl<T> OutParam<T, CopyType> for &mut T -where - T: TypeKind<TypeKind = CopyType> + Clone + Default, -{ - unsafe fn borrow_mut(&self) -> OutRef<'_, T> { - unsafe { transmute_copy(self) } - } -} - -impl<T> OutParam<T, InterfaceType> for &mut Option<T> -where - T: TypeKind<TypeKind = InterfaceType> + Clone, -{ - unsafe fn borrow_mut(&self) -> OutRef<'_, T> { - unsafe { - let this: &mut Option<T> = transmute_copy(self); - take(this); - transmute_copy(self) - } - } -} - -impl<T> OutParam<T> for Option<&mut T> -where - T: Type<T>, -{ - unsafe fn borrow_mut(&self) -> OutRef<'_, T> { - unsafe { - match self { - Some(this) => transmute_copy(this), - None => zeroed(), - } - } - } -} |
