Revert "fix: use typeid of atoms for their unique ID (#558)"

This reverts commit bf9901a6cd.

packages/fermi/src/atoms/atom.rs

@@ -3,7 +3,7 @@ use crate::{AtomId, AtomRoot, Readable, Writable};
 pub type Atom<T> = fn(AtomBuilder) -> T;
 pub struct AtomBuilder;
 
-impl<V: 'static> Readable<V> for Atom<V> {
+impl<V> Readable<V> for Atom<V> {
     fn read(&self, _root: AtomRoot) -> Option<V> {
         todo!()
     }
@@ -11,14 +11,11 @@ impl<V: 'static> Readable<V> for Atom<V> {
         (*self)(AtomBuilder)
     }
     fn unique_id(&self) -> AtomId {
-        AtomId {
+        *self as *const ()
-            ptr: *self as *const (),
-            type_id: std::any::TypeId::of::<V>(),
-        }
     }
 }
 
-impl<V: 'static> Writable<V> for Atom<V> {
+impl<V> Writable<V> for Atom<V> {
     fn write(&self, _root: AtomRoot, _value: V) {
         todo!()
     }

packages/fermi/src/atoms/atomfamily.rs

@@ -4,7 +4,7 @@ use im_rc::HashMap as ImMap;
 pub struct AtomFamilyBuilder;
 pub type AtomFamily<K, V> = fn(AtomFamilyBuilder) -> ImMap<K, V>;
 
-impl<K, V: 'static> Readable<ImMap<K, V>> for AtomFamily<K, V> {
+impl<K, V> Readable<ImMap<K, V>> for AtomFamily<K, V> {
     fn read(&self, _root: AtomRoot) -> Option<ImMap<K, V>> {
         todo!()
     }
@@ -14,14 +14,11 @@ impl<K, V: 'static> Readable<ImMap<K, V>> for AtomFamily<K, V> {
     }
 
     fn unique_id(&self) -> AtomId {
-        AtomId {
+        *self as *const ()
-            ptr: *self as *const (),
-            type_id: std::any::TypeId::of::<V>(),
-        }
     }
 }
 
-impl<K, V: 'static> Writable<ImMap<K, V>> for AtomFamily<K, V> {
+impl<K, V> Writable<ImMap<K, V>> for AtomFamily<K, V> {
     fn write(&self, _root: AtomRoot, _value: ImMap<K, V>) {
         todo!()
     }

packages/fermi/src/atoms/atomref.rs

@@ -4,7 +4,7 @@ use std::cell::RefCell;
 pub struct AtomRefBuilder;
 pub type AtomRef<T> = fn(AtomRefBuilder) -> T;
 
-impl<V: 'static> Readable<RefCell<V>> for AtomRef<V> {
+impl<V> Readable<RefCell<V>> for AtomRef<V> {
     fn read(&self, _root: AtomRoot) -> Option<RefCell<V>> {
         todo!()
     }
@@ -14,10 +14,7 @@ impl<V: 'static> Readable<RefCell<V>> for AtomRef<V> {
     }
 
     fn unique_id(&self) -> AtomId {
-        AtomId {
+        *self as *const ()
-            ptr: *self as *const (),
-            type_id: std::any::TypeId::of::<V>(),
-        }
     }
 }
 

packages/fermi/src/root.rs

@@ -1,21 +1,11 @@
-use std::{
+use std::{any::Any, cell::RefCell, collections::HashMap, rc::Rc, sync::Arc};
-    any::{Any, TypeId},
-    cell::RefCell,
-    collections::HashMap,
-    rc::Rc,
-    sync::Arc,
-};
 
 use dioxus_core::ScopeId;
 use im_rc::HashSet;
 
 use crate::Readable;
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub type AtomId = *const ();
-pub struct AtomId {
-    pub ptr: *const (),
-    pub type_id: TypeId,
-}
 
 pub struct AtomRoot {
     pub atoms: RefCell<HashMap<AtomId, Slot>>,
@@ -54,15 +44,7 @@ impl AtomRoot {
         // initialize the value if it's not already initialized
         if let Some(slot) = atoms.get_mut(&f.unique_id()) {
             slot.subscribers.insert(scope);
-            match slot.value.clone().downcast() {
+            slot.value.clone().downcast().unwrap()
-                Ok(res) => res,
-                Err(e) => panic!(
-                    "Downcasting atom failed: {:?}. Has typeid of {:?} but needs typeid of {:?}",
-                    f.unique_id(),
-                    e.type_id(),
-                    TypeId::of::<V>()
-                ),
-            }
         } else {
             let value = Rc::new(f.init());
             let mut subscribers = HashSet::new();