differentiate between func enclosing block in translation

Author: Robbepop

crates/wasmi/src/engine/translator/func2/mod.rs

@@ -237,6 +237,14 @@ impl FuncTranslator {
 
     /// Translates the end of a Wasm `block` control frame.
     fn translate_end_block(&mut self, frame: BlockControlFrame) -> Result<(), Error> {
+        if self.stack.is_control_empty() {
+            return self.translate_end_func(frame);
+        }
+        todo!()
+    }
+
+    /// Translates the end of the Wasm function enclosing Wasm `block`.
+    fn translate_end_func(&mut self, frame: BlockControlFrame) -> Result<(), Error> {
         todo!()
     }
 

crates/wasmi/src/engine/translator/func2/stack/mod.rs

@@ -99,6 +99,11 @@ impl Stack {
         self.operands.register_locals(amount, ty)
     }
 
+    /// Returns `true` if the control stack is empty.
+    pub fn is_control_empty(&self) -> bool {
+        self.controls.is_empty()
+    }
+
     /// Returns the current height of the [`Stack`].
     ///
     /// # Note