Struct vstd::ptr::PointsTo

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pub struct PointsTo<V> { /* private fields */ }
👎Deprecated: The vstd::ptr version of PPtr is deprecated. Use either: – PPtr<T> in vstd::simple_pptr (for simple use-cases, with fixed-size typed heap allocations) – *mut T with vstd::raw_ptr (for more advanced use-cases)
Expand description

A tracked ghost object that gives the user permission to dereference a pointer for reading or writing, or to free the memory at that pointer.

The meaning of a PointsTo object is given by the data in its View object, PointsToData.

See the PPtr documentation for more details.

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impl<V> PointsTo<V>

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pub spec fn view(self) -> PointsToData<V>

👎Deprecated: The vstd::ptr version of PPtr is deprecated. Use either: – PPtr<T> in vstd::simple_pptr (for simple use-cases, with fixed-size typed heap allocations) – *mut T with vstd::raw_ptr (for more advanced use-cases)
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pub proof fn is_nonnull(tracked &self)

👎Deprecated: The vstd::ptr version of PPtr is deprecated. Use either: – PPtr<T> in vstd::simple_pptr (for simple use-cases, with fixed-size typed heap allocations) – *mut T with vstd::raw_ptr (for more advanced use-cases)
ensures
self@.pptr != 0,

Any dereferenceable pointer must be non-null. (Note that null pointers do exist and are representable by PPtr; however, it is not possible to obtain a PointsTo token for any such a pointer.)

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pub proof fn leak_contents(tracked &mut self)

👎Deprecated: The vstd::ptr version of PPtr is deprecated. Use either: – PPtr<T> in vstd::simple_pptr (for simple use-cases, with fixed-size typed heap allocations) – *mut T with vstd::raw_ptr (for more advanced use-cases)
ensures
self@.pptr == old(self)@.pptr && self@.value.is_None(),
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impl<V> PointsTo<V>

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pub proof fn into_raw(tracked self) -> PointsToRaw

👎Deprecated: The vstd::ptr version of PPtr is deprecated. Use either: – PPtr<T> in vstd::simple_pptr (for simple use-cases, with fixed-size typed heap allocations) – *mut T with vstd::raw_ptr (for more advanced use-cases)
requires
self@.value.is_None(),
ensures
points_to_raw.is_range(self@.pptr, size_of::<V>() as int),
is_sized::<V>(),
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pub proof fn borrow_raw(tracked &self) -> tracked &PointsToRaw

👎Deprecated: The vstd::ptr version of PPtr is deprecated. Use either: – PPtr<T> in vstd::simple_pptr (for simple use-cases, with fixed-size typed heap allocations) – *mut T with vstd::raw_ptr (for more advanced use-cases)
requires
self@.value.is_None(),
ensures
points_to_raw.is_range(self@.pptr, size_of::<V>() as int),
is_sized::<V>(),

Auto Trait Implementations§

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impl<V> RefUnwindSafe for PointsTo<V>
where V: RefUnwindSafe,

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impl<V> Send for PointsTo<V>
where V: Send,

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impl<V> Sync for PointsTo<V>
where V: Sync,

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impl<V> Unpin for PointsTo<V>
where V: Unpin,

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impl<V> UnwindSafe for PointsTo<V>
where V: 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.