Struct tantivy_fst::automaton::AlwaysMatch

pub struct AlwaysMatch;

An automaton that always matches.

This is useful in a generic context as a way to express that no automaton should be used.

Trait Implementations

impl Automaton for AlwaysMatch

type State = ()

The type of the state used in the automaton.

fn start(&self)

Returns a single start state for this automaton.

fn is_match(&self, _: &()) -> bool

Returns true if and only if state is a match state.

fn can_match(&self, _: &()) -> bool

Returns true if and only if state can lead to a match in zero or more steps.

fn will_always_match(&self, _: &()) -> bool

Returns true if and only if state matches and must match no matter what steps are taken.

fn accept(&self, _: &(), _: u8)

Return the next state given state and an input.

fn starts_with(self) -> StartsWith<Self>where
    Self: Sized,

Returns an automaton that matches the strings that start with something this automaton matches.

fn union<Rhs: Automaton>(self, rhs: Rhs) -> Union<Self, Rhs>where
    Self: Sized,

Returns an automaton that matches the strings matched by either this or the other automaton.

fn intersection<Rhs: Automaton>(self, rhs: Rhs) -> Intersection<Self, Rhs>where
    Self: Sized,

Returns an automaton that matches the strings matched by both this and the other automaton.

fn complement(self) -> Complement<Self>where
    Self: Sized,

Returns an automaton that matches the strings not matched by this automaton.

impl Clone for AlwaysMatch

fn clone(&self) -> AlwaysMatch

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for AlwaysMatch

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

Formats the value using the given formatter.