diff options
Diffstat (limited to 'src/libcore/ops/generator.rs')
| -rw-r--r-- | src/libcore/ops/generator.rs | 31 |
1 files changed, 2 insertions, 29 deletions
diff --git a/src/libcore/ops/generator.rs b/src/libcore/ops/generator.rs index 4e43561996c..4f23620b92b 100644 --- a/src/libcore/ops/generator.rs +++ b/src/libcore/ops/generator.rs @@ -67,7 +67,7 @@ pub enum GeneratorState<Y, R> { #[lang = "generator"] #[unstable(feature = "generator_trait", issue = "43122")] #[fundamental] -pub trait Generator<#[cfg(not(bootstrap))] R = ()> { +pub trait Generator<R = ()> { /// The type of value this generator yields. /// /// This associated type corresponds to the `yield` expression and the @@ -110,35 +110,9 @@ pub trait Generator<#[cfg(not(bootstrap))] R = ()> { /// been returned previously. While generator literals in the language are /// guaranteed to panic on resuming after `Complete`, this is not guaranteed /// for all implementations of the `Generator` trait. - fn resume( - self: Pin<&mut Self>, - #[cfg(not(bootstrap))] arg: R, - ) -> GeneratorState<Self::Yield, Self::Return>; + fn resume(self: Pin<&mut Self>, arg: R) -> GeneratorState<Self::Yield, Self::Return>; } -#[cfg(bootstrap)] -#[unstable(feature = "generator_trait", issue = "43122")] -impl<G: ?Sized + Generator> Generator for Pin<&mut G> { - type Yield = G::Yield; - type Return = G::Return; - - fn resume(mut self: Pin<&mut Self>) -> GeneratorState<Self::Yield, Self::Return> { - G::resume((*self).as_mut()) - } -} - -#[cfg(bootstrap)] -#[unstable(feature = "generator_trait", issue = "43122")] -impl<G: ?Sized + Generator + Unpin> Generator for &mut G { - type Yield = G::Yield; - type Return = G::Return; - - fn resume(mut self: Pin<&mut Self>) -> GeneratorState<Self::Yield, Self::Return> { - G::resume(Pin::new(&mut *self)) - } -} - -#[cfg(not(bootstrap))] #[unstable(feature = "generator_trait", issue = "43122")] impl<G: ?Sized + Generator<R>, R> Generator<R> for Pin<&mut G> { type Yield = G::Yield; @@ -149,7 +123,6 @@ impl<G: ?Sized + Generator<R>, R> Generator<R> for Pin<&mut G> { } } -#[cfg(not(bootstrap))] #[unstable(feature = "generator_trait", issue = "43122")] impl<G: ?Sized + Generator<R> + Unpin, R> Generator<R> for &mut G { type Yield = G::Yield; |
