Add Module::custom_sections and FromToNativeWasmType::is_from_store

lib/api/src/js/externals/function.rs

@@ -599,7 +599,7 @@ mod inner {
     use super::RuntimeError;
     use super::VMFunctionBody;
     use crate::js::function_env::{FunctionEnvMut, VMFunctionEnvironment};
-    use crate::js::store::{AsStoreMut, InternalStoreHandle, StoreHandle, StoreMut};
+    use crate::js::store::{AsStoreMut, AsStoreRef, InternalStoreHandle, StoreHandle, StoreMut};
     use crate::js::FunctionEnv;
     use crate::js::NativeWasmTypeInto;
     use std::array::TryFromSliceError;
@@ -640,6 +640,9 @@ mod inner {
         /// This method panics if `self` cannot fit in the
         /// `Self::Native` type.
         fn to_native(self) -> Self::Native;
+
+        /// Returns whether this native type belongs to the given store
+        fn is_from_store(&self, _store: &impl AsStoreRef) -> bool;
     }
 
     macro_rules! from_to_native_wasm_type {
@@ -658,6 +661,11 @@ mod inner {
                     fn to_native(self) -> Self::Native {
                         self as Self::Native
                     }
+
+                    #[inline]
+                    fn is_from_store(&self, _store: &impl AsStoreRef) -> bool {
+                        self.handle.store_id() == store.as_store_ref().objects().id()
+                    }
                 }
             )*
         };
@@ -679,6 +687,11 @@ mod inner {
                     fn to_native(self) -> Self::Native {
                         Self::Native::from_ne_bytes(Self::to_ne_bytes(self))
                     }
+
+                    #[inline]
+                    fn is_from_store(&self, _store: &impl AsStoreRef) -> bool {
+                        self.handle.store_id() == store.as_store_ref().objects().id()
+                    }
                 }
             )*
         };

lib/api/src/js/module.rs

@@ -551,16 +551,16 @@ impl Module {
         ExportsIterator::new(iter, exports.length() as usize)
     }
 
-    // /// Get the custom sections of the module given a `name`.
+    /// Get the custom sections of the module given a `name`.
-    // ///
+    ///
-    // /// # Important
+    /// # Important
-    // ///
+    ///
-    // /// Following the WebAssembly spec, one name can have multiple
+    /// Following the WebAssembly spec, one name can have multiple
-    // /// custom sections. That's why an iterator (rather than one element)
+    /// custom sections. That's why an iterator (rather than one element)
-    // /// is returned.
+    /// is returned.
-    // pub fn custom_sections<'a>(&'a self, name: &'a str) -> impl Iterator<Item = Arc<[u8]>> + 'a {
+    pub fn custom_sections<'a>(&'a self, name: &'a str) -> impl Iterator<Item = Box<[u8]>> + 'a {
-    //     unimplemented!();
+        unimplemented!()
-    // }
+    }
 }
 
 impl fmt::Debug for Module {

lib/api/src/js/ptr.rs

@@ -1,4 +1,4 @@
-use crate::js::NativeWasmTypeInto;
+use crate::{AsStoreRef, js::NativeWasmTypeInto};
 use crate::js::{externals::MemoryView, FromToNativeWasmType};
 use crate::js::{MemoryAccessError, WasmRef, WasmSlice};
 use std::convert::TryFrom;
@@ -234,6 +234,10 @@ where
             _phantom: PhantomData,
         }
     }
+    #[inline]
+    fn is_from_store(&self, store: &impl AsStoreRef) -> bool {
+        true // TODO ???
+    }
 }
 
 unsafe impl<T: ValueType, M: MemorySize> ValueType for WasmPtr<T, M> {