Struct rustc_middle::ty::trait_def::TraitDef

pub struct TraitDef {
    pub def_id: DefId,
    pub unsafety: Unsafety,
    pub paren_sugar: bool,
    pub has_auto_impl: bool,
    pub is_marker: bool,
    pub skip_array_during_method_dispatch: bool,
    pub specialization_kind: TraitSpecializationKind,
    pub def_path_hash: DefPathHash,
}

A trait’s definition with type information.

Fields

def_id: DefId

unsafety: Unsafety

paren_sugar: bool

If true, then this trait had the #[rustc_paren_sugar] attribute, indicating that it should be used with Foo() sugar. This is a temporary thing – eventually any trait will be usable with the sugar (or without it).

has_auto_impl: bool

is_marker: bool

If true, then this trait has the #[marker] attribute, indicating that all its associated items have defaults that cannot be overridden, and thus impls of it are allowed to overlap.

skip_array_during_method_dispatch: bool

If true, then this trait has the #[rustc_skip_array_during_method_dispatch] attribute, indicating that editions before 2021 should not consider this trait during method dispatch if the receiver is an array.

specialization_kind: TraitSpecializationKind

Used to determine whether the standard library is allowed to specialize on this trait.

def_path_hash: DefPathHash

The ICH of this trait’s DefPath, cached here so it doesn’t have to be recomputed all the time.

Implementations

impl<'tcx> TraitDef

pub fn new(
    def_id: DefId,
    unsafety: Unsafety,
    paren_sugar: bool,
    has_auto_impl: bool,
    is_marker: bool,
    skip_array_during_method_dispatch: bool,
    specialization_kind: TraitSpecializationKind,
    def_path_hash: DefPathHash
) -> TraitDef

pub fn ancestors(
    &self,
    tcx: TyCtxt<'tcx>,
    of_impl: DefId
) -> Result<Ancestors<'tcx>, ErrorReported>

Trait Implementations

impl Debug for TraitDef

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

Formats the value using the given formatter.

impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for TraitDef

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

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