list: mark as transparent and impl TransparentPtr

List and SList are wrappers around C pointers

Author: pbor

glib/src/collections/list.rs

@@ -8,11 +8,20 @@ use crate::translate::*;
 /// A list of items of type `T`.
 ///
 /// Behaves like an `Iterator<Item = T>` but allows modifications.
+#[repr(transparent)]
 pub struct List<T: TransparentPtrType> {
     ptr: Option<ptr::NonNull<ffi::GList>>,
     phantom: PhantomData<T>,
 }
 
+#[doc(hidden)]
+unsafe impl<T: TransparentPtrType> TransparentPtrType for List<T> {}
+
+#[doc(hidden)]
+impl<T: TransparentPtrType> GlibPtrDefault for List<T> {
+    type GlibType = *mut ffi::GList;
+}
+
 unsafe impl<T: Send + TransparentPtrType> Send for List<T> {}
 
 unsafe impl<T: Sync + TransparentPtrType> Sync for List<T> {}

glib/src/collections/slist.rs

@@ -8,11 +8,20 @@ use crate::translate::*;
 /// A list of items of type `T`.
 ///
 /// Behaves like an `Iterator<Item = T>` but allows modifications.
+#[repr(transparent)]
 pub struct SList<T: TransparentPtrType> {
     ptr: Option<ptr::NonNull<ffi::GSList>>,
     phantom: PhantomData<T>,
 }
 
+#[doc(hidden)]
+unsafe impl<T: TransparentPtrType> TransparentPtrType for SList<T> {}
+
+#[doc(hidden)]
+impl<T: TransparentPtrType> GlibPtrDefault for SList<T> {
+    type GlibType = *mut ffi::GSList;
+}
+
 unsafe impl<T: Send + TransparentPtrType> Send for SList<T> {}
 
 unsafe impl<T: Sync + TransparentPtrType> Sync for SList<T> {}