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ExclusiveSP

vstd_extra::resource::storage_protocol::excl

Enum ExclusiveSP 

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pub enum ExclusiveSP<A> {
    Unit,
    Exclusive(Option<A>),
    Invalid,
}

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Unit

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Exclusive(Option<A>)

Exclusive ownership of a value.

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Invalid

Invalid state.

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impl<A> ExclusiveSP<A>

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pub fn arrow_0(self) -> Option<A>

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pub fn arrow_Exclusive_0(self) -> Option<A>

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impl<A> ExclusiveSP<A>

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pub open spec fn value(self) -> A

{
    match self {
        ExclusiveSP::Exclusive(Some(x)) => x,
        _ => arbitrary(),
    }
}
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pub proof fn lemma_deposits(self, value: A)

requires
self is Exclusive,
self->Exclusive_0 is None,
ensures
deposits(self, map![() => value], ExclusiveSP::Exclusive(Some(value))),

Trait Implementations§

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impl<A> Protocol<(), A> for ExclusiveSP<A>

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open spec fn op(self, other: Self) -> Self

{
    match (self, other) {
        (ExclusiveSP::Unit, x) => x,
        (x, ExclusiveSP::Unit) => x,
        _ => ExclusiveSP::Invalid,
    }
}
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open spec fn rel(self, s: Map<(), A>) -> bool

{
    match self {
        ExclusiveSP::Unit => s.is_empty(),
        ExclusiveSP::Exclusive(None) => s.is_empty(),
        ExclusiveSP::Exclusive(Some(x)) => s =~= map![() => x],
        ExclusiveSP::Invalid => false,
    }
}
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open spec fn unit() -> Self

{ ExclusiveSP::Unit }
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proof fn commutative(a: Self, b: Self)

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proof fn associative(a: Self, b: Self, c: Self)

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proof fn op_unit(a: Self)

Auto Trait Implementations§

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impl<A> Freeze for ExclusiveSP<A>
where A: Freeze,

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impl<A> RefUnwindSafe for ExclusiveSP<A>
where A: RefUnwindSafe,

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impl<A> Send for ExclusiveSP<A>
where A: Send,

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impl<A> Sync for ExclusiveSP<A>
where A: Sync,

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impl<A> Unpin for ExclusiveSP<A>
where A: Unpin,

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impl<A> UnsafeUnpin for ExclusiveSP<A>
where A: UnsafeUnpin,

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impl<A> UnwindSafe for ExclusiveSP<A>
where A: 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>