copy assignment operator

src/jsc/jsc_protected.hpp

@@ -90,6 +90,12 @@ class Protected<JSValueRef> {
             return JSValueIsStrictEqual(a.m_context, a.m_value, b.m_value);
         }
     };
+    
+    Protected<JSValueRef>& operator=(Protected<JSValueRef> other) {
+        std::swap(m_context, other.m_context);
+        std::swap(m_value, other.m_value);
+        return *this;
+    }
 };
 
 template<>
@@ -104,6 +110,11 @@ class Protected<JSObjectRef> : public Protected<JSValueRef> {
         JSValueRef value = static_cast<JSValueRef>(*this);
         return (JSObjectRef)value;
     }
+    
+    Protected<JSObjectRef>& operator=(Protected<JSObjectRef> other) {
+        std::swap(*this, other);
+        return *this;
+    }
 };
 
 } // js