Enum rustc_type_ir::sty::DynKind

pub enum DynKind {
    Dyn,
    DynStar,
}

Specifies how a trait object is represented.

Variants

Dyn

An unsized dyn Trait object

DynStar

A sized dyn* Trait object

These objects are represented as a (data, vtable) pair where data is a ptr-sized value (often a pointer to the real object, but not necessarily) and vtable is a pointer to the vtable for dyn* Trait. The representation is essentially the same as &dyn Trait or similar, but the drop function included in the vtable is responsible for freeing the underlying storage if needed. This allows a dyn* object to be treated agnostically with respect to whether it points to a Box<T>, Rc<T>, etc.

Trait Implementations

impl Clone for DynKind

fn clone(&self) -> DynKind

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DynKind

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

Formats the value using the given formatter.

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

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

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

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

impl Hash for DynKind

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl<__CTX> HashStable<__CTX> for DynKindwhere
    __CTX: HashStableContext,

fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

impl Ord for DynKind

fn cmp(&self, other: &DynKind) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<DynKind> for DynKind

fn eq(&self, other: &DynKind) -> 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 PartialOrd<DynKind> for DynKind

fn partial_cmp(&self, other: &DynKind) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for DynKind

impl Eq for DynKind

impl StructuralEq for DynKind

impl StructuralPartialEq for DynKind

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:

• Dyn: 0 bytes
• DynStar: 0 bytes