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PointsTowithDealloc

vstd_extra::raw_ptr_extra

Struct PointsTowithDealloc 

Source 
pub struct PointsTowithDealloc<T> {
    pub points_to: PointsTo<T>,
    pub dealloc: Option<Dealloc>,
}

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§points_to: PointsTo<T>§dealloc: Option<Dealloc>

Implementations§

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impl<T> PointsTowithDealloc<T>

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pub open spec fn ptr(self) -> *mut T

{ self.points_to.ptr() }
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pub open spec fn addr(self) -> usize

{ self.ptr().addr() }
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pub open spec fn is_init(self) -> bool

{ self.points_to.is_init() }
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pub open spec fn is_uninit(self) -> bool

{ self.points_to.is_uninit() }
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pub open spec fn value(self) -> T

{ self.points_to.value() }
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pub open spec fn dealloc_aligned(self) -> bool

{
    match self.dealloc {
        Some(dealloc) => dealloc.align() == vstd::layout::align_of::<T>(),
        None => true,
    }
}
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pub proof fn tracked_borrow_points_to(tracked &self) -> tracked ret : &PointsTo<T>

returns
&self.points_to,
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pub proof fn tracked_get_points_to(tracked self) -> tracked ret : PointsTo<T>

returns
self.points_to,
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pub proof fn new(tracked points_to: PointsTo<T>, tracked dealloc: Option<Dealloc>) -> tracked ret : Self

requires
match dealloc {
    Some(dealloc) => (
        &&& vstd::layout::size_of::<T>() > 0
        &&& valid_layout(size_of::<T>(), dealloc.align() as usize)
        &&& points_to.ptr().addr() == dealloc.addr()
        &&& points_to.ptr()@.provenance == dealloc.provenance()
        &&& dealloc.size() == vstd::layout::size_of::<T>()

    ),
    None => vstd::layout::size_of::<T>() == 0,
},
ensures
ret.inv(),
returns
(PointsTowithDealloc {
    points_to,
    dealloc,
}),
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pub proof fn new_non_zero_size(tracked points_to: PointsTo<T>, tracked dealloc: Dealloc) -> tracked ret : Self

requires
0 < vstd::layout::size_of::<T>(),
valid_layout(size_of::<T>(), dealloc.align() as usize),
points_to.ptr().addr() == dealloc.addr(),
points_to.ptr()@.provenance == dealloc.provenance(),
dealloc.size() == vstd::layout::size_of::<T>() as int,
dealloc.align() == vstd::layout::align_of::<T>(),
ensures
ret.inv(),
returns
(PointsTowithDealloc {
    points_to,
    dealloc: Some(dealloc),
}),
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pub proof fn new_zero_size(tracked points_to: PointsTo<T>) -> tracked ret : Self

requires
vstd::layout::size_of::<T>() == 0,
ensures
ret.inv(),
returns
(PointsTowithDealloc {
    points_to,
    dealloc: None,
}),
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pub proof fn into_raw(tracked self) -> tracked (PointsToRaw, Option<Dealloc>)

requires
self.inv(),
self.is_uninit(),
ensures
match dealloc {
    Some(dealloc) => (
        &&& vstd::layout::size_of::<T>() > 0
        &&& dealloc.addr() == self.addr()
        &&& dealloc.addr() as int % vstd::layout::align_of::<T>() as int == 0
        &&& dealloc.size() == vstd::layout::size_of::<T>() as int
        &&& dealloc.provenance() == ret.provenance()
        &&& ret.is_range(dealloc.addr() as int, vstd::layout::size_of::<T>() as int)

    ),
    None => (
        &&& vstd::layout::size_of::<T>() == 0

    ),
},

Trait Implementations§

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impl<T> Inv for PointsTowithDealloc<T>

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open spec fn inv(self) -> bool

{
    &&& self.points_to.ptr().addr() as int % vstd::layout::align_of::<T>() as int == 0
    &&& match self.dealloc {
        Some(dealloc) => (
            &&& vstd::layout::size_of::<T>() > 0
            &&& self.points_to.ptr().addr() == dealloc.addr()
            &&& self.points_to.ptr()@.provenance == dealloc.provenance()
            &&& dealloc.size() == vstd::layout::size_of::<T>()
            &&& valid_layout(size_of::<T>(), dealloc.align() as usize)

        ),
        None => vstd::layout::size_of::<T>() == 0,
    }

}

Auto Trait Implementations§

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impl<T> Freeze for PointsTowithDealloc<T>

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

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impl<T> Send for PointsTowithDealloc<T>
where T: Send,

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impl<T> Sync for PointsTowithDealloc<T>
where T: Sync,

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

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impl<T> UnsafeUnpin for PointsTowithDealloc<T>

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impl<T> UnwindSafe for PointsTowithDealloc<T>
where T: UnwindSafe,

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