Struct regex_automata::hybrid::dfa::OverlappingState

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

Represents the current state of an overlapping search.

This is used for overlapping searches since they need to know something about the previous search. For example, when multiple patterns match at the same position, this state tracks the last reported pattern so that the next search knows whether to report another matching pattern or continue with the search at the next position. Additionally, it also tracks which state the last search call terminated in.

This type provides little introspection capabilities. The only thing a caller can do is construct it and pass it around to permit search routines to use it to track state, and also ask whether a match has been found.

Callers should always provide a fresh state constructed via OverlappingState::start when starting a new search. Reusing state from a previous search may result in incorrect results.

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impl OverlappingState

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pub fn start() -> OverlappingState

Create a new overlapping state that begins at the start state of any automaton.

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pub fn get_match(&self) -> Option<HalfMatch>

Return the match result of the most recent search to execute with this state.

A searches will clear this result automatically, such that if no match is found, this will correctly report None.

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impl Clone for OverlappingState

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fn clone(&self) -> OverlappingState

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 OverlappingState

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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 PartialEq for OverlappingState

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fn eq(&self, other: &OverlappingState) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for OverlappingState

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impl StructuralPartialEq for OverlappingState

Auto Trait 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.