Struct grep_matcher::ByteSet

pub struct ByteSet(_);

A set of bytes.

In this crate, byte sets are used to express bytes that can never appear anywhere in a match for a particular implementation of the Matcher trait. Specifically, if such a set can be determined, then it's possible for callers to perform additional operations on the basis that certain bytes may never match.

For example, if a search is configured to possibly produce results that span multiple lines but a caller provided pattern can never match across multiple lines, then it may make sense to divert to more optimized line oriented routines that don't need to handle the multi-line match case.

Methods

impl ByteSet

pub fn empty() -> ByteSet

Create an empty set of bytes.

pub fn full() -> ByteSet

Create a full set of bytes such that every possible byte is in the set returned.

pub 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 fn add_all(&mut self, start: u8, end: u8)

Add an inclusive range of bytes.

pub 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 fn remove_all(&mut self, start: u8, end: u8)

Remove an inclusive range of bytes.

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

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

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.