Enum CharClass 

pub enum CharClass {
    Alpha,
    Digit,
    AlphaNum,
    Whitespace,
    Exact(char),
    OneOf(Vec<char>),
    NoneOf(Vec<char>),
}

A simple character class for lexer rules.

Variants

Alpha

Matches any ASCII letter

Digit

Matches any ASCII digit

AlphaNum

Matches any ASCII alphanumeric

Whitespace

Matches whitespace

Exact(char)

Matches a specific character

OneOf(Vec<char>)

Matches any character in a set

NoneOf(Vec<char>)

Matches any character not in a set

Implementations

impl CharClass

pub fn matches(&self, c: char) -> bool

Returns true if the character matches this class.

Trait Implementations

impl Clone for CharClass

fn clone(&self) -> CharClass

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CharClass

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

Formats the value using the given formatter.