feat: integrate fermi

packages/fermi/src/hooks/read.rs

@@ -0,0 +1,36 @@
+use crate::{use_atom_root, AtomId, AtomRoot, Readable};
+use dioxus_core::{ScopeId, ScopeState};
+use std::rc::Rc;
+
+pub fn use_read<'a, V: 'static>(cx: &'a ScopeState, f: impl Readable<V>) -> &'a V {
+    use_read_rc(cx, f).as_ref()
+}
+
+pub fn use_read_rc<'a, V: 'static>(cx: &'a ScopeState, f: impl Readable<V>) -> &'a Rc<V> {
+    let root = use_atom_root(cx);
+
+    struct UseReadInner<V> {
+        root: Rc<AtomRoot>,
+        id: AtomId,
+        scope_id: ScopeId,
+        value: Option<Rc<V>>,
+    }
+
+    impl<V> Drop for UseReadInner<V> {
+        fn drop(&mut self) {
+            self.root.unsubscribe(self.id, self.scope_id)
+        }
+    }
+
+    let inner = cx.use_hook(|_| UseReadInner {
+        value: None,
+        root: root.clone(),
+        scope_id: cx.scope_id(),
+        id: f.unique_id(),
+    });
+
+    let value = inner.root.register(f, cx.scope_id());
+
+    inner.value = Some(value);
+    inner.value.as_ref().unwrap()
+}