Make AsStoreRef and friends work for anything that derefs to an AsStoreRef

Author: Michael-F-Bryan

lib/api/src/sys/store.rs

@@ -1,6 +1,9 @@
 use crate::sys::tunables::BaseTunables;
 use derivative::Derivative;
-use std::fmt;
+use std::{
+    fmt,
+    ops::{Deref, DerefMut},
+};
 #[cfg(feature = "compiler")]
 use wasmer_compiler::{AsEngineRef, Engine, EngineBuilder, EngineRef, Tunables};
 use wasmer_types::OnCalledAction;
@@ -220,13 +223,6 @@ impl AsEngineRef for Store {
     }
 }
 
-#[cfg(feature = "compiler")]
-impl AsEngineRef for &Store {
-    fn as_engine_ref(&self) -> EngineRef<'_> {
-        EngineRef::new(&self.engine)
-    }
-}
-
 #[cfg(feature = "compiler")]
 impl AsEngineRef for StoreRef<'_> {
     fn as_engine_ref(&self) -> EngineRef<'_> {
@@ -374,21 +370,26 @@ impl AsStoreMut for StoreMut<'_> {
     }
 }
 
-impl<T: AsStoreRef> AsStoreRef for &'_ T {
+impl<P> AsStoreRef for P
+where
+    P: Deref,
+    P::Target: AsStoreRef,
+{
     fn as_store_ref(&self) -> StoreRef<'_> {
-        T::as_store_ref(*self)
+        (**self).as_store_ref()
     }
 }
-impl<T: AsStoreRef> AsStoreRef for &'_ mut T {
-    fn as_store_ref(&self) -> StoreRef<'_> {
-        T::as_store_ref(*self)
-    }
-}
-impl<T: AsStoreMut> AsStoreMut for &'_ mut T {
+
+impl<P> AsStoreMut for P
+where
+    P: DerefMut,
+    P::Target: AsStoreMut,
+{
     fn as_store_mut(&mut self) -> StoreMut<'_> {
-        T::as_store_mut(*self)
+        (**self).as_store_mut()
     }
+
     fn objects_mut(&mut self) -> &mut StoreObjects {
-        T::objects_mut(*self)
+        (**self).objects_mut()
     }
 }

lib/compiler/src/engine/engineref.rs

@@ -1,3 +1,5 @@
+use core::ops::Deref;
+
 use super::Engine;
 use crate::Tunables;
 
@@ -37,3 +39,13 @@ impl AsEngineRef for EngineRef<'_> {
         EngineRef { inner: self.inner }
     }
 }
+
+impl<P> AsEngineRef for P
+where
+    P: Deref,
+    P::Target: AsEngineRef,
+{
+    fn as_engine_ref(&self) -> EngineRef<'_> {
+        (**self).as_engine_ref()
+    }
+}