Struct Finder

struct Finder { ... }

A forward substring searcher using the Shift-Or algorithm.

Implementations

impl Finder

fn new(needle: &[u8]) -> Option<Finder>

Create a new Shift-Or forward searcher for the given needle.

The needle may be empty. The empty needle matches at every byte offset.

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

Return the first occurrence of the needle given to Finder::new in the haystack given. If no such occurrence exists, then None is returned.

Unlike most other substring search implementations in this crate, this finder does not require passing the needle at search time. A match can be determined without the needle at all since the required information is already encoded into this finder at construction time.

The maximum value this can return is haystack.len(), which can only occur when the needle and haystack both have length zero. Otherwise, for non-empty haystacks, the maximum value is haystack.len() - 1.

impl Debug for Finder

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

impl Freeze for Finder

impl RefUnwindSafe for Finder

impl Send for Finder

impl Sync for Finder

impl Unpin for Finder

impl UnwindSafe for Finder

impl<T> Any for Finder

fn type_id(self: &Self) -> TypeId

impl<T> Borrow for Finder

fn borrow(self: &Self) -> &T

impl<T> BorrowMut for Finder

fn borrow_mut(self: &mut Self) -> &mut T

impl<T> From for Finder

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into for Finder

fn into(self: Self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

impl<T, U> TryFrom for Finder

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto for Finder

fn try_into(self: Self) -> Result<U, <U as TryFrom<T>>::Error>