diff options
Diffstat (limited to 'src/test/ui/issues/issue-51301.rs')
-rw-r--r-- | src/test/ui/issues/issue-51301.rs | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-51301.rs b/src/test/ui/issues/issue-51301.rs new file mode 100644 index 000000000..7e0a5190f --- /dev/null +++ b/src/test/ui/issues/issue-51301.rs @@ -0,0 +1,35 @@ +use std::any::TypeId; +use std::collections::HashMap; +use std::hash::Hash; + +trait State { + type EventType; + fn get_type_id_of_state(&self) -> TypeId; +} + +struct StateMachine<EventType: Hash + Eq> { + current_state: Box<dyn State<EventType = EventType>>, + transition_table: + HashMap<TypeId, HashMap<EventType, fn() -> Box<dyn State<EventType = EventType>>>>, +} + +impl<EventType: Hash + Eq> StateMachine<EventType> { + fn inner_process_event(&mut self, event: EventType) -> Result<(), i8> { + let new_state_creation_function = self + .transition_table + .iter() + .find(|(&event_typeid, _)| event_typeid == self.current_state.get_type_id_of_state()) + .ok_or(1)? + .1 + .iter() + .find(|(&event_type, _)| event == event_type) + //~^ ERROR cannot move out of a shared reference + .ok_or(2)? + .1; + + self.current_state = new_state_creation_function(); + Ok(()) + } +} + +fn main() {} |