Struct conch_runtime::eval::EvalRedirectOrCmdWord

#[must_use = "futures do nothing unless polled"]
pub struct EvalRedirectOrCmdWord<R, W, I, E: ?Sized, RR = RedirectRestorer<E>> where
    R: RedirectEval<E>,
    W: WordEval<E>,  { /* fields omitted */ }

A future which will evaluate a series of redirections and shell words.

All redirections will be applied to the environment. On successful completion, a RedirectEnvRestorer will be returned which allows the caller to reverse the changes from applying these redirections. On error, the redirections will be automatically restored.

Trait Implementations

impl<R, W, I, E: ?Sized, RR> Debug for EvalRedirectOrCmdWord<R, W, I, E, RR> where
    I: Debug,
    R: RedirectEval<E>,
    R::EvalFuture: Debug,
    W: WordEval<E>,
    W::EvalFuture: Debug,
    W::EvalResult: Debug,
    RR: Debug, 

fn fmt(&self, fmt: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<R, W, I, E: ?Sized, RR> EnvFuture<E> for EvalRedirectOrCmdWord<R, W, I, E, RR> where
    I: Iterator<Item = RedirectOrCmdWord<R, W>>,
    R: RedirectEval<E, Handle = E::FileHandle>,
    R::Error: From<RedirectionError>,
    W: WordEval<E>,
    E: AsyncIoEnvironment + FileDescEnvironment,
    E::FileHandle: From<FileDesc>,
    RR: RedirectEnvRestorer<E>, 

type Item = (RR, Vec<W::EvalResult>)

The type of value that this future will resolved with if it is successful.

type Error = EvalRedirectOrCmdWordError<R::Error, W::Error>

The type of error that this future will resolve with if it fails in a normal fashion.

fn poll(&mut self, env: &mut E) -> Poll<Self::Item, Self::Error>

Behaves identical to Future::poll when polled with a provided environment.

fn cancel(&mut self, env: &mut E)

Cancel a future and consider it as completed, thus giving it a chance to run any clean up as if it had resolved on its own.

fn pin_env(self, env: E) -> Pinned<E, Self> where
    E: Sized,
    Self: Sized, 

Pin an environment to this future, allowing the resulting future to be polled from anywhere without needing the caller to specify an environment.

fn fuse(self) -> Fuse<Self> where
    Self: Sized, 

Fuse a future such that poll and cancel will never again be called once it has completed.

fn boxed_result<'a>(self) -> BoxedResult<'a, Self> where
    Self: Sized,
    Self::Item: 'a + Future, 

Converts the resulting future into a boxed trait object.