Struct AsciiClassBitmap 

pub struct AsciiClassBitmap { /* private fields */ }

A 128-bit bitmap for fast ASCII character class membership testing. Each bit represents whether the corresponding ASCII byte (0-127) is in the class.

Implementations

impl AsciiClassBitmap

pub fn empty() -> Self

Create an empty bitmap (matches nothing).

pub fn all_ascii() -> Self

Create a bitmap that matches all ASCII characters.

pub fn from_char_class(class: &CharClass) -> Self

Create a bitmap from an AST CharClass.

pub fn from_hir_class(class: &HirClass) -> Self

Create a bitmap from an IR HirClass.

pub fn contains(&self, byte: u8) -> bool

Check if a byte is in the class.

pub fn contains_char(&self, ch: char) -> bool

Check if a character is in the class.

pub fn find_first(&self, haystack: &[u8]) -> Option<usize>

Find the first position in the slice where any byte matches the class. Returns None if no match is found.

pub fn find_all(&self, haystack: &[u8]) -> Vec<usize>

Find all positions where bytes match the class. Returns a vector of indices.

pub fn count_matches(&self, haystack: &[u8]) -> usize

Count how many bytes in the slice match the class.

pub fn matches_any(&self, haystack: &[u8]) -> bool

Check if the bitmap matches any byte in the slice.

Trait Implementations

impl Clone for AsciiClassBitmap

fn clone(&self) -> AsciiClassBitmap

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AsciiClassBitmap

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

Formats the value using the given formatter.

impl Default for AsciiClassBitmap

fn default() -> Self

Returns the “default value” for a type.

impl Copy for AsciiClassBitmap