vstd::tokens::frac

Struct Empty

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pub struct Empty<T, const TOTAL: u64 = 2> { /* private fields */ }
Expand description

Token that represents the “empty” state of a fractional resource system. See Frac for more information.

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impl<T, const TOTAL: u64> Empty<T, TOTAL>

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pub closed spec fn id(self) -> Loc

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pub proof fn new(tracked v: T) -> tracked result : Self

requires
TOTAL > 0,
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pub proof fn put_resource(tracked self, tracked resource: T) -> tracked frac : Frac<T, TOTAL>

ensures
frac.id() == self.id(),
frac.resource() == resource,
frac.frac() == TOTAL,

Give up ownership of a resource and obtain a Frac token.

Auto Trait Implementations§

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impl<T, const TOTAL: u64> Freeze for Empty<T, TOTAL>

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impl<T, const TOTAL: u64> RefUnwindSafe for Empty<T, TOTAL>
where T: RefUnwindSafe,

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impl<T, const TOTAL: u64> Send for Empty<T, TOTAL>
where T: Send + Sync,

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impl<T, const TOTAL: u64> Sync for Empty<T, TOTAL>
where T: Sync + Send,

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impl<T, const TOTAL: u64> Unpin for Empty<T, TOTAL>
where T: Unpin,

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impl<T, const TOTAL: u64> UnwindSafe for Empty<T, TOTAL>
where T: UnwindSafe,

Blanket Implementations§

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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, 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.