Struct Capabilities 

#[non_exhaustive]
pub struct Capabilities {
    pub identity: BackendIdentity,
    pub supports: Supports,
}

Full capability snapshot for a backend: its BackendIdentity plus a flat Supports surface of per-method bools.

Consumers typically read caps.supports.<field> to gate a UI surface or choose between two code paths before dispatching; the Self::identity side exists for metrics dimensioning + UI labelling.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

identity: BackendIdentity

Backend identity tuple this snapshot was assembled for.

supports: Supports

Per-capability support bools.

Implementations

impl Capabilities

pub const fn new(identity: BackendIdentity, supports: Supports) -> Self

Construct a Capabilities value from an identity + a populated Supports. Backends typically build one in capabilities() without going through a constructor; this exists for out-of-tree backends that prefer the explicit call.

Trait Implementations

impl Clone for Capabilities

fn clone(&self) -> Capabilities

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Capabilities

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

Formats the value using the given formatter.

impl PartialEq for Capabilities

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Copy for Capabilities

impl Eq for Capabilities

impl StructuralPartialEq for Capabilities