Enum ExtensionKind 

pub enum ExtensionKind {
    Backreference(CaptureId),
    VariableWidthAssertion(AssertionId),
}

Stable kinds understood by the non-regular extension lane.

Variants

Backreference(CaptureId)

Compare input with an earlier capture.

VariableWidthAssertion(AssertionId)

Evaluate an assertion whose width cannot be established statically.

Trait Implementations

impl Clone for ExtensionKind

fn clone(&self) -> ExtensionKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ExtensionKind

impl Debug for ExtensionKind

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

Formats the value using the given formatter.

impl Eq for ExtensionKind

impl PartialEq for ExtensionKind

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ExtensionKind