pub struct Builder { /* private fields */ }
Expand description

A builder for constructing a packed searcher from a collection of patterns.

§Example

This example shows how to use a builder to construct a searcher. By default, leftmost-first match semantics are used.

use aho_corasick::{packed::{Builder, MatchKind}, PatternID};

let searcher = Builder::new()
    .add("foobar")
    .add("foo")
    .build()?;
let matches: Vec<PatternID> = searcher
    .find_iter("foobar")
    .map(|mat| mat.pattern())
    .collect();
assert_eq!(vec![PatternID::ZERO], matches);

Implementations§

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impl Builder

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pub fn new() -> Builder

Create a new builder for constructing a multi-pattern searcher. This constructor uses the default configuration.

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pub fn build(&self) -> Option<Searcher>

Build a searcher from the patterns added to this builder so far.

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pub fn add<P: AsRef<[u8]>>(&mut self, pattern: P) -> &mut Builder

Add the given pattern to this set to match.

The order in which patterns are added is significant. Namely, when using leftmost-first match semantics, then when multiple patterns can match at a particular location, the pattern that was added first is used as the match.

If the number of patterns added exceeds the amount supported by packed searchers, then the builder will stop accumulating patterns and render itself inert. At this point, constructing a searcher will always return None.

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pub fn extend<I, P>(&mut self, patterns: I) -> &mut Builder
where I: IntoIterator<Item = P>, P: AsRef<[u8]>,

Add the given iterator of patterns to this set to match.

The iterator must yield elements that can be converted into a &[u8].

The order in which patterns are added is significant. Namely, when using leftmost-first match semantics, then when multiple patterns can match at a particular location, the pattern that was added first is used as the match.

If the number of patterns added exceeds the amount supported by packed searchers, then the builder will stop accumulating patterns and render itself inert. At this point, constructing a searcher will always return None.

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pub fn len(&self) -> usize

Returns the number of patterns added to this builder.

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pub fn minimum_len(&self) -> usize

Returns the length, in bytes, of the shortest pattern added.

Trait Implementations§

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impl Clone for Builder

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fn clone(&self) -> Builder

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Builder

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

Formats the value using the given formatter. Read more
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impl Default for Builder

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fn default() -> Builder

Returns the “default value” for a type. Read more

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.