wsdom_core/
js_cast.rs

1use crate::js::value::JsValue;
2
3/// For converting between JavaScript types.
4///
5/// Note that most class types generated by WSDOM also comes with `Into` and `AsRef` impls for converting to their ancestors in the inheritance chain.
6pub trait JsCast
7where
8    Self: AsRef<JsValue> + Into<JsValue>,
9{
10    // fn instanceof(val: &JsValue) -> bool;
11    fn unchecked_from_js(val: JsValue) -> Self;
12    fn unchecked_from_js_ref(val: &JsValue) -> &Self;
13
14    // fn has_type<T>(&self) -> bool
15    //    where T: JsCast { ... }
16    // fn dyn_into<T>(self) -> Result<T, Self>
17    //    where T: JsCast { ... }
18    // fn dyn_ref<T>(&self) -> Option<&T>
19    //    where T: JsCast { ... }
20    fn unchecked_into<T>(self) -> T
21    where
22        T: JsCast,
23    {
24        T::unchecked_from_js(self.into())
25    }
26    fn unchecked_ref<T>(&self) -> &T
27    where
28        T: JsCast,
29    {
30        T::unchecked_from_js_ref(self.as_ref())
31    }
32    // fn is_instance_of<T>(&self) -> bool
33    //    where T: JsCast { ... }
34    // fn is_type_of(val: &JsValue) -> bool { ... }
35}
wsdom_core/js_cast.rs

wsdom_core/
js_cast.rs
