Trait FutureExt 

pub trait FutureExt: Future + Sized {
    // Required methods
    fn attach<A>(self, attachment: A) -> FutureWithAttachment<Self, A> 
       where A: Attachment;
    fn attach_with<A, F>(
        self,
        attachment: F,
    ) -> FutureWithLazyAttachment<Self, F> 
       where A: Attachment,
             F: FnOnce() -> A;
    fn attach_opaque<A>(
        self,
        attachment: A,
    ) -> FutureWithOpaqueAttachment<Self, A> 
       where A: OpaqueAttachment;
    fn attach_opaque_with<A, F>(
        self,
        attachment: F,
    ) -> FutureWithLazyOpaqueAttachment<Self, F> 
       where A: OpaqueAttachment,
             F: FnOnce() -> A;
    fn change_context<C>(self, context: C) -> FutureWithContext<Self, C> 
       where C: Error + Send + Sync + 'static;
    fn change_context_lazy<C, F>(
        self,
        context: F,
    ) -> FutureWithLazyContext<Self, F> 
       where C: Error + Send + Sync + 'static,
             F: FnOnce() -> C;
}

Extension trait for Future to provide contextual information on Reports.

Required Methods

fn attach<A>(self, attachment: A) -> FutureWithAttachment<Self, A>

where A: Attachment,

Adds a new printable attachment to the Report inside the Result when polling the Future.

Applies Report::attach on the Err variant, refer to it for more information.

fn attach_with<A, F>(self, attachment: F) -> FutureWithLazyAttachment<Self, F>

where A: Attachment, F: FnOnce() -> A,

Lazily adds a new printable attachment to the Report inside the Result when polling the Future.

Applies Report::attach on the Err variant, refer to it for more information.

fn attach_opaque<A>(self, attachment: A) -> FutureWithOpaqueAttachment<Self, A>

where A: OpaqueAttachment,

Adds a new attachment to the Report inside the Result when polling the Future.

Applies Report::attach_opaque on the Err variant, refer to it for more information.

fn attach_opaque_with<A, F>( self, attachment: F, ) -> FutureWithLazyOpaqueAttachment<Self, F>

where A: OpaqueAttachment, F: FnOnce() -> A,

Lazily adds a new attachment to the Report inside the Result when polling the Future.

Applies Report::attach_opaque on the Err variant, refer to it for more information.

fn change_context<C>(self, context: C) -> FutureWithContext<Self, C>

where C: Error + Send + Sync + 'static,

Changes the Error context of the Report inside the Result when polling the Future.

Applies Report::change_context on the Err variant, refer to it for more information.

fn change_context_lazy<C, F>(self, context: F) -> FutureWithLazyContext<Self, F>

where C: Error + Send + Sync + 'static, F: FnOnce() -> C,

Lazily changes the Error context of the Report inside the Result when polling the Future.

Applies Report::change_context on the Err variant, refer to it for more information.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<Fut: Future> FutureExt for Fut

where Fut::Output: ResultExt,