Struct regex_automata::util::alphabet::ByteSet

pub(crate) struct ByteSet {
    bits: BitSet,
}

A simple set of bytes that is reasonably cheap to copy and allocation free.

Fields

bits: BitSet

Implementations

impl ByteSet

pub(crate) fn empty() -> ByteSet

Create an empty set of bytes.

pub(crate) fn add(&mut self, byte: u8)

Add a byte to this set.

If the given byte already belongs to this set, then this is a no-op.

pub(crate) fn remove(&mut self, byte: u8)

Remove a byte from this set.

If the given byte is not in this set, then this is a no-op.

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

Return true if and only if the given byte is in this set.

pub(crate) fn contains_range(&self, start: u8, end: u8) -> bool

Return true if and only if the given inclusive range of bytes is in this set.

pub(crate) fn iter(&self) -> ByteSetIter<'_>

Returns an iterator over all bytes in this set.

pub(crate) fn iter_ranges(&self) -> ByteSetRangeIter<'_>

Returns an iterator over all contiguous ranges of bytes in this set.

pub(crate) fn is_empty(&self) -> bool

Return true if and only if this set is empty.

pub(crate) fn from_bytes( slice: &[u8], ) -> Result<(ByteSet, usize), DeserializeError>

Deserializes a byte set from the given slice. If the slice is of incorrect length or is otherwise malformed, then an error is returned. Upon success, the number of bytes read along with the set are returned. The number of bytes read is always a multiple of 8.

pub(crate) fn write_to<E: Endian>( &self, dst: &mut [u8], ) -> Result<usize, SerializeError>

Writes this byte set to the given byte buffer. If the given buffer is too small, then an error is returned. Upon success, the total number of bytes written is returned. The number of bytes written is guaranteed to be a multiple of 8.

pub(crate) fn write_to_len(&self) -> usize

Returns the total number of bytes written by write_to.

Trait Implementations

impl Clone for ByteSet

fn clone(&self) -> ByteSet

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ByteSet

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

Formats the value using the given formatter.

impl Default for ByteSet

fn default() -> ByteSet

Returns the “default value” for a type.

impl PartialEq for ByteSet

fn eq(&self, other: &ByteSet) -> 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 Copy for ByteSet

impl Eq for ByteSet

impl StructuralPartialEq for ByteSet