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FreeStep

fp_library::types::free

Enum FreeStep 

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pub enum FreeStep<F, A>
where
    F: Extract + Functor + 'static,
    A: 'static,
{
    Done(A),
    Suspended(<F as Kind_cdc7cd43dac7585f>::Of<'static, Free<F, A>>),
}
Expand description

The result of stepping through a Free computation.

Produced by Free::to_view, this decomposes a Free into either a final value or a suspended functor layer with all pending continuations reattached. This provides a unified, single-step decomposition that both Free::evaluate and Free::resume delegate to.

§Type Parameters

  • F: The base functor. Requires Extract and Functor to match the struct-level bounds on Free.
  • A: The result type of the computation.

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Done(A)

The computation completed with a final value.

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Suspended(<F as Kind_cdc7cd43dac7585f>::Of<'static, Free<F, A>>)

The computation is suspended in the functor F. The inner Free values have all pending continuations reattached.

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impl<F, A> Freeze for FreeStep<F, A>
where A: Freeze, <F as Kind_cdc7cd43dac7585f>::Of<'static, Free<F, A>>: Freeze,

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impl<F, A> RefUnwindSafe for FreeStep<F, A>
where A: RefUnwindSafe, <F as Kind_cdc7cd43dac7585f>::Of<'static, Free<F, A>>: RefUnwindSafe,

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impl<F, A> Send for FreeStep<F, A>
where A: Send, <F as Kind_cdc7cd43dac7585f>::Of<'static, Free<F, A>>: Send,

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impl<F, A> Sync for FreeStep<F, A>
where A: Sync, <F as Kind_cdc7cd43dac7585f>::Of<'static, Free<F, A>>: Sync,

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impl<F, A> Unpin for FreeStep<F, A>
where A: Unpin, <F as Kind_cdc7cd43dac7585f>::Of<'static, Free<F, A>>: Unpin,

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impl<F, A> UnsafeUnpin for FreeStep<F, A>
where A: UnsafeUnpin, <F as Kind_cdc7cd43dac7585f>::Of<'static, Free<F, A>>: UnsafeUnpin,

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impl<F, A> UnwindSafe for FreeStep<F, A>
where A: UnwindSafe, <F as Kind_cdc7cd43dac7585f>::Of<'static, Free<F, A>>: UnwindSafe,

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pipe for T

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fn pipe<B>(self, f: impl FnOnce(Self) -> B) -> B

Pipes self into a function, enabling left-to-right composition. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.