Enum rustc_const_eval::transform::promote_consts::TempState

pub enum TempState {
    Undefined,
    Defined {
        location: Location,
        uses: usize,
        valid: Result<(), ()>,
    },
    Unpromotable,
    PromotedOut,
}

State of a temporary during collection and promotion.

Variants

Undefined

No references to this temp.

Defined

Fields

location: Location

uses: usize

valid: Result<(), ()>

One direct assignment and any number of direct uses. A borrow of this temp is promotable if the assigned value is qualified as constant.

Unpromotable

Any other combination of assignments/uses.

PromotedOut

This temp was part of an rvalue which got extracted during promotion and needs cleanup.

Implementations

impl TempState

pub fn is_promotable(&self) -> bool

Trait Implementations

impl Clone for TempState

fn clone(&self) -> TempState

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TempState

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

Formats the value using the given formatter.

impl PartialEq<TempState> for TempState

fn eq(&self, other: &TempState) -> bool

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

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for TempState

impl Eq for TempState

impl StructuralEq for TempState

impl StructuralPartialEq for TempState

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes

Size for each variant:

• Undefined: 0 bytes
• Defined: 31 bytes
• Unpromotable: 0 bytes
• PromotedOut: 0 bytes