From 8cdfa445d6629ffef4cb84967ff7017654045bc2 Mon Sep 17 00:00:00 2001
From: mo khan <mo@mokhan.ca>
Date: Wed, 2 Jul 2025 18:36:06 -0600
Subject: chore: add vendor directory

---
 vendor/windows-core/src/param.rs | 76 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 vendor/windows-core/src/param.rs

(limited to 'vendor/windows-core/src/param.rs')

diff --git a/vendor/windows-core/src/param.rs b/vendor/windows-core/src/param.rs
new file mode 100644
index 00000000..5ebf3add
--- /dev/null
+++ b/vendor/windows-core/src/param.rs
@@ -0,0 +1,76 @@
+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)) }
+    }
+}
-- 
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