Struct Optional

pub struct Optional<V> {
    pub enabled: bool,
    pub visitor: V,
}

A visitor which visits node only if enabled is true.

Fields

enabled: bool

visitor: V

Implementations

impl<V> Optional<V>

pub const fn new(visitor: V, enabled: bool) -> Optional<V>

Trait Implementations

impl<V> Clone for Optional<V>

where V: Clone,

fn clone(&self) -> Optional<V>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<V> Debug for Optional<V>

where V: Debug,

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

Formats the value using the given formatter.

impl<V> PartialEq for Optional<V>

where V: PartialEq,

fn eq(&self, other: &Optional<V>) -> 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<V> Copy for Optional<V>

where V: Copy,

impl<V> Eq for Optional<V>

where V: Eq,

impl<V> StructuralPartialEq for Optional<V>