Struct ExtensionSpec 

pub struct ExtensionSpec {
    pub name: NameSpec,
    pub description: &'static str,
    pub type_id: fn() -> TypeId,
}

A declared extension requirement on an OperationMetadata.

Fields

name: NameSpec

How the runtime name of the required extension is determined.

description: &'static str

A human-readable description of what the operation needs from the extension.

type_id: fn() -> TypeId

A factory that produces the TypeId of the extension type. Stored as a function rather than a value because TypeId::of is only const on recent compilers.

Trait Implementations

impl Clone for ExtensionSpec

fn clone(&self) -> ExtensionSpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExtensionSpec

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

Formats the value using the given formatter.