with value now returns whatever the closure returns

togglebyte · Aug 30, 2024 · 419fa1d · 419fa1d
1 parent 4c064a5
commit 419fa1d
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diff --git a/anathema-runtime/src/lib.rs b/anathema-runtime/src/lib.rs
@@ -165,7 +165,6 @@ impl<T> RuntimeBuilder<T> {
             future_values: FutureValues::empty(),
 
             changes: Changes::empty(),
-            // tab_indices: TabIndices::new(),
             component_registry: self.component_registry,
             globals,
             document: self.document,

diff --git a/anathema-store/src/tree/mod.rs b/anathema-store/src/tree/mod.rs
@@ -223,13 +223,14 @@ impl<T> Tree<T> {
 
     /// Perform a given operation (`F`) on a mutable reference to a value in the tree
     /// while still having mutable access to the rest of the tree.
-    pub fn with_value_mut<F>(&mut self, value_id: ValueId, f: F)
+    pub fn with_value_mut<F, V>(&mut self, value_id: ValueId, f: F) -> V
     where
-        F: FnOnce(&[u16], &mut T, &mut Self),
+        F: FnOnce(&[u16], &mut T, &mut Self) -> V,
     {
         let mut ticket = self.values.checkout(value_id);
-        f(&ticket.value.0, &mut ticket.value.1, self);
+        let value = f(&ticket.value.0, &mut ticket.value.1, self);
         self.values.restore(ticket);
+        value
     }
 
     /// Get mutable access to a node value along with the children