5 use crate::runtime::driver::Driver;
16     driver: Mutex<Option<Driver>>,  field
28     pub(super) fn new(driver: Driver) -> Shell {  in new()
29         let unpark = Arc::new(Handle(driver.unpark()));  in new()
32             driver: Mutex::new(Some(driver)),  in new()
47             if let Some(driver) = &mut self.take_driver() {  in block_on()
48                 return driver.block_on(f);  in block_on()
74         let mut lock = self.driver.lock().unwrap();  in take_driver()
75         let driver = lock.take()?;  in take_driver()  localVariable
78             inner: Some(driver),  in take_driver()
103         let driver = self.inner.as_mut().unwrap();  in block_on()  localVariable
115             driver.park().unwrap();  in block_on()
124                 .driver  in drop()