Struct TokenKindSet 

pub struct TokenKindSet { /* private fields */ }

A set of token kind discriminants for fast membership testing.

Implementations

impl TokenKindSet

pub fn new() -> Self

Create an empty set.

pub fn add(&mut self, kind: &TokenKind)

Add a kind to the set.

pub fn contains(&self, kind: &TokenKind) -> bool

Check if the set contains a kind.

pub fn len(&self) -> usize

Number of kinds in the set.

pub fn is_empty(&self) -> bool

Whether the set is empty.

Trait Implementations

impl Default for TokenKindSet

fn default() -> Self

Returns the “default value” for a type.