resynth/
object.rs

1use std::any::Any;
2use std::cell::{Ref, RefCell, RefMut};
3use std::fmt::Debug;
4use std::ops::Deref;
5use std::rc::Rc;
6
7use crate::libapi::Class;
8use crate::sym::Symbol;
9use crate::traits::Dispatchable;
10
11pub trait Obj: Class + Debug + Dispatchable {
12    fn as_any(&self) -> &dyn Any;
13    fn as_mut_any(&mut self) -> &mut dyn Any;
14    fn equals_obj(&self, _: &dyn Obj) -> bool;
15}
16
17impl<T: 'static + PartialEq + Eq + Class + Debug> Obj for T {
18    fn as_any(&self) -> &dyn Any {
19        self
20    }
21
22    fn as_mut_any(&mut self) -> &mut dyn Any {
23        self
24    }
25
26    fn equals_obj(&self, other: &dyn Obj) -> bool {
27        other.as_any().downcast_ref::<T>() == Some(self)
28    }
29}
30
31impl<T: Obj> Dispatchable for T {
32    fn lookup_symbol(&self, name: &str) -> Option<Symbol> {
33        self.get(name).copied()
34    }
35}
36
37#[derive(Debug, Clone)]
38pub struct ObjRef {
39    inner: Rc<RefCell<dyn Obj>>,
40}
41
42impl From<Rc<RefCell<dyn Obj>>> for ObjRef {
43    fn from(obj: Rc<RefCell<dyn Obj>>) -> Self {
44        Self { inner: obj }
45    }
46}
47
48impl<T: 'static + Obj> From<T> for ObjRef {
49    fn from(obj: T) -> Self {
50        Self {
51            inner: Rc::new(RefCell::new(obj)),
52        }
53    }
54}
55
56impl Eq for ObjRef {}
57impl PartialEq for ObjRef {
58    fn eq(&self, other: &ObjRef) -> bool {
59        self.inner.borrow().equals_obj(other.inner.borrow().deref())
60    }
61}
62
63impl Dispatchable for ObjRef {
64    fn lookup_symbol(&self, name: &str) -> Option<Symbol> {
65        self.inner.borrow().lookup_symbol(name)
66    }
67}
68
69impl ObjRef {
70    pub fn borrow(&self) -> Ref<'_, dyn Obj> {
71        self.inner.borrow()
72    }
73
74    pub fn borrow_mut(&self) -> RefMut<'_, dyn Obj> {
75        self.inner.borrow_mut()
76    }
77}
resynth/object.rs

resynth/
object.rs
