Merge pull request rails#54404 from byroot/inline-isolated-state

Inline `IsolatedExecutionState#state`

Author: byroot

activesupport/lib/active_support/isolated_execution_state.rb

@@ -33,23 +33,26 @@ def unique_id
       end
 
       def [](key)
-        state[key]
+        if state = @scope.current.active_support_execution_state
+          state[key]
+        end
       end
 
       def []=(key, value)
+        state = (@scope.current.active_support_execution_state ||= {})
         state[key] = value
       end
 
       def key?(key)
-        state.key?(key)
+        @scope.current.active_support_execution_state&.key?(key)
       end
 
       def delete(key)
-        state.delete(key)
+        @scope.current.active_support_execution_state&.delete(key)
       end
 
       def clear
-        state.clear
+        @scope.current.active_support_execution_state&.clear
       end
 
       def context
@@ -62,11 +65,6 @@ def share_with(other)
         # and streaming should be rethought.
         context.active_support_execution_state = other.active_support_execution_state.dup
       end
-
-      private
-        def state
-          context.active_support_execution_state ||= {}
-        end
     end
 
     self.isolation_level = :thread