Enum rustc_mir::interpret::MemPlaceMeta[−][src]

pub enum MemPlaceMeta<Tag = ()> {
    Meta(Scalar<Tag>),
    None,
    Poison,
}
Expand description

Information required for the sound usage of a MemPlace.

Variants

Meta(Scalar<Tag>)
Expand description

The unsized payload (e.g. length for slices or vtable pointer for trait objects).

None
Expand description

Sized types or unsized extern type

Poison
Expand description

The address of this place may not be taken. This protects the MemPlace from coming from a ZST Operand without a backing allocation and being converted to an integer address. This should be impossible, because you can’t take the address of an operand, but this is a second protection layer ensuring that we don’t mess up.

Implementations

impl<Tag> MemPlaceMeta<Tag>[src]

pub fn unwrap_meta(self) -> Scalar<Tag>[src]

fn has_meta(self) -> bool[src]

pub fn erase_tag(self) -> MemPlaceMeta<()>[src]

Trait Implementations

impl<Tag: Clone> Clone for MemPlaceMeta<Tag>[src]

fn clone(&self) -> MemPlaceMeta<Tag>[src]

Returns a copy of the value. Read more

fn clone_from(&mut self, source: &Self)1.0.0[src]

Performs copy-assignment from source. Read more

impl<Tag: Debug> Debug for MemPlaceMeta<Tag>[src]

fn fmt(&self, f: &mut Formatter<'_>) -> Result[src]

Formats the value using the given formatter. Read more

impl<Tag: Hash> Hash for MemPlaceMeta<Tag>[src]

fn hash<__H: Hasher>(&self, state: &mut __H)[src]

Feeds this value into the given Hasher. Read more

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 1.3.0[src]

Feeds a slice of this type into the given Hasher. Read more

impl<'__ctx, Tag> HashStable<StableHashingContext<'__ctx>> for MemPlaceMeta<Tag> where
    Tag: HashStable<StableHashingContext<'__ctx>>, [src]

fn hash_stable(
    &self,
    __hcx: &mut StableHashingContext<'__ctx>,
    __hasher: &mut StableHasher
)[src]

impl<Tag: PartialEq> PartialEq<MemPlaceMeta<Tag>> for MemPlaceMeta<Tag>[src]

fn eq(&self, other: &MemPlaceMeta<Tag>) -> bool[src]

This method tests for self and other values to be equal, and is used by ==. Read more

fn ne(&self, other: &MemPlaceMeta<Tag>) -> bool[src]

This method tests for !=.

impl<Tag: Copy> Copy for MemPlaceMeta<Tag>[src]

impl<Tag: Eq> Eq for MemPlaceMeta<Tag>[src]

impl<Tag> StructuralEq for MemPlaceMeta<Tag>[src]

impl<Tag> StructuralPartialEq for MemPlaceMeta<Tag>[src]

Auto Trait Implementations

impl<Tag> RefUnwindSafe for MemPlaceMeta<Tag> where
    Tag: RefUnwindSafe, 

impl<Tag> Send for MemPlaceMeta<Tag> where
    Tag: Send, 

impl<Tag> Sync for MemPlaceMeta<Tag> where
    Tag: Sync, 

impl<Tag> Unpin for MemPlaceMeta<Tag> where
    Tag: Unpin, 

impl<Tag> UnwindSafe for MemPlaceMeta<Tag> where
    Tag: UnwindSafe, 

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src]

pub fn type_id(&self) -> TypeId[src]

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

pub fn borrow(&self) -> &T[src]

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut T[src]

Mutably borrows from an owned value. Read more

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

Performs the conversion.

impl<T, U> Into<U> for T where
    U: From<T>, [src]

pub fn into(self) -> U[src]

Performs the conversion.

impl<T> ToOwned for T where
    T: Clone, [src]

type Owned = T

The resulting type after obtaining ownership.

pub fn to_owned(&self) -> T[src]

Creates owned data from borrowed data, usually by cloning. Read more

pub fn clone_into(&self, target: &mut T)[src]

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]

Performs the conversion.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]

Performs the conversion.

impl<T> WithConstness for T[src]

fn with_constness(self, constness: Constness) -> ConstnessAnd<Self>[src]

fn with_const(self) -> ConstnessAnd<Self>[src]

fn without_const(self) -> ConstnessAnd<Self>[src]