Enum rustc_ast::ast::TraitBoundModifier

pub enum TraitBoundModifier {
    None,
    Negative,
    Maybe,
    MaybeConst,
    MaybeConstNegative,
    MaybeConstMaybe,
}

A modifier on a bound, e.g., ?Trait or ~const Trait.

Negative bounds should also be handled here.

Variants

None

No modifiers

Negative

!Trait

Maybe

?Trait

MaybeConst

~const Trait

MaybeConstNegative

~const !Trait

MaybeConstMaybe

~const ?Trait

Implementations

impl TraitBoundModifier

pub fn to_constness(self) -> Const

Trait Implementations

impl Clone for TraitBoundModifier

fn clone(&self) -> TraitBoundModifier

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TraitBoundModifier

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

Formats the value using the given formatter.

impl<__D: Decoder> Decodable<__D> for TraitBoundModifier

fn decode(__decoder: &mut __D) -> Self

impl<__E: Encoder> Encodable<__E> for TraitBoundModifier

fn encode(&self, __encoder: &mut __E)

impl PartialEq<TraitBoundModifier> for TraitBoundModifier

fn eq(&self, other: &TraitBoundModifier) -> 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 TraitBoundModifier

impl Eq for TraitBoundModifier

impl StructuralEq for TraitBoundModifier

impl StructuralPartialEq for TraitBoundModifier

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: 1 byte

Size for each variant:

• None: 0 bytes
• Negative: 0 bytes
• Maybe: 0 bytes
• MaybeConst: 0 bytes
• MaybeConstNegative: 0 bytes
• MaybeConstMaybe: 0 bytes