Enum rustc_mir::interpret::eval_context::LocalValue[−][src]

pub enum LocalValue<Tag = ()> {
    Dead,
    Uninitialized,
    Live(Operand<Tag>),
}
Expand description

Current value of a local variable

Variants

Dead
Expand description

This local is not currently alive, and cannot be used at all.

Uninitialized
Expand description

This local is alive but not yet initialized. It can be written to but not read from or its address taken. Locals get initialized on first write because for unsized locals, we do not know their size before that.

Live(Operand<Tag>)
Expand description

A normal, live local. Mostly for convenience, we re-use the Operand type here. This is an optimization over just always having a pointer here; we can thus avoid doing an allocation when the local just stores immediate values and never has its address taken.

Trait Implementations

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

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

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

Formats the value using the given formatter. Read more

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

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

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

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

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

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

This method tests for !=.

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

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

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

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

Auto Trait Implementations

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

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

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

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

impl<Tag> UnwindSafe for LocalValue<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]