Partially implement yield*

valuescript_vm/src/bytecode_stack_frame.rs

@@ -560,7 +560,10 @@ impl StackFrameTrait for BytecodeStackFrame {
       }
 
       YieldStar => {
-        panic!("TODO: yield*");
+        let val = self.decoder.decode_val(&self.registers);
+        self.decoder.decode_register_index(); // TODO: Use this
+
+        return Ok(FrameStepOk::YieldStar(val));
       }
     };
 

valuescript_vm/src/generator.rs

@@ -172,6 +172,7 @@ impl StackFrameTrait for GeneratorFrame {
         .to_dynamic_val(),
         this: take(&mut self.generator).to_dynamic_val(),
       })),
+      Ok(FrameStepOk::YieldStar(_)) => panic!("TODO: yield* (as instruction)"),
     }
   }
 

valuescript_vm/src/stack_frame.rs

@@ -13,6 +13,7 @@ pub enum FrameStepOk {
   Pop(CallResult),
   Push(StackFrame),
   Yield(Val),
+  YieldStar(Val),
 }
 
 pub type FrameStepResult = Result<FrameStepOk, Val>;

valuescript_vm/src/virtual_machine.rs

@@ -88,6 +88,7 @@ impl VirtualMachine {
       }
       // TODO: Internal errors
       FrameStepOk::Yield(_) => return self.handle_exception("Unexpected yield".to_error()),
+      FrameStepOk::YieldStar(_) => return self.handle_exception("Unexpected yield*".to_error()),
     }
 
     Ok(())