FracStorage

vstd_extra::resource::storage::frac

Struct FracStorage 

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pub struct FracStorage<T> { /* private fields */ }
Expand description

The authoritative fractional storage resource.

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impl<T> FracStorage<T>

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pub closed spec fn storage_resource(self) -> StorageResource<(), T, FracP<T>>

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pub closed spec fn id(self) -> Loc

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pub closed spec fn protocol_monoid(self) -> FracP<T>

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pub open spec fn resource(self) -> T

{ self.protocol_monoid().value() }
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pub closed spec fn frac(self) -> real

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pub open spec fn has_full_frac(self) -> bool

{ self.frac() == 1.0real }
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pub proof fn new(tracked v: T) -> tracked res : Self

ensures
res.has_full_frac(),

Allocate a new fractional storage resource with full permission.

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pub proof fn split(tracked &mut self) -> tracked r : FracStorage<T>

ensures
self.id() == old(self).id(),
self.resource() == old(self).resource(),
r.resource() == old(self).resource(),
r.id() == old(self).id(),
r.frac() + self.frac() == old(self).frac(),

Split one token into two tokens whose quantities sum to the original.

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pub proof fn borrow(tracked &self) -> tracked s : &T

ensures
*s == self.resource(),

Obtain shared access to the underlying resource.

Auto Trait Implementations§

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impl<T> Freeze for FracStorage<T>

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impl<T> RefUnwindSafe for FracStorage<T>
where T: RefUnwindSafe,

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impl<T> Send for FracStorage<T>
where T: Send + Sync,

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impl<T> Sync for FracStorage<T>
where T: Sync + Send,

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impl<T> Unpin for FracStorage<T>
where T: Unpin,

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impl<T> UnwindSafe for FracStorage<T>
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, VERUS_SPEC__A> FromSpec<T> for VERUS_SPEC__A
where VERUS_SPEC__A: From<T>,

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fn obeys_from_spec() -> bool

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fn from_spec(v: T) -> VERUS_SPEC__A

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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, VERUS_SPEC__A> IntoSpec<T> for VERUS_SPEC__A
where VERUS_SPEC__A: Into<T>,

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fn obeys_into_spec() -> bool

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fn into_spec(self) -> T

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

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fn obeys_into_spec() -> bool

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fn into_spec(self) -> U

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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, VERUS_SPEC__A> TryFromSpec<T> for VERUS_SPEC__A
where VERUS_SPEC__A: TryFrom<T>,

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fn obeys_try_from_spec() -> bool

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fn try_from_spec( v: T, ) -> Result<VERUS_SPEC__A, <VERUS_SPEC__A as TryFrom<T>>::Error>

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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.
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impl<T, VERUS_SPEC__A> TryIntoSpec<T> for VERUS_SPEC__A
where VERUS_SPEC__A: TryInto<T>,

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fn obeys_try_into_spec() -> bool

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fn try_into_spec(self) -> Result<T, <VERUS_SPEC__A as TryInto<T>>::Error>

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impl<T, U> TryIntoSpecImpl<U> for T
where U: TryFrom<T>,

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fn obeys_try_into_spec() -> bool

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fn try_into_spec(self) -> Result<U, <U as TryFrom<T>>::Error>