Struct selectors::NthIndexCache

pub struct NthIndexCache {
    nth: NthIndexCacheInner,
    nth_of_selectors: NthIndexOfSelectorsCaches,
    nth_last: NthIndexCacheInner,
    nth_last_of_selectors: NthIndexOfSelectorsCaches,
    nth_of_type: NthIndexCacheInner,
    nth_last_of_type: NthIndexCacheInner,
}

Expand description

A cache to speed up matching of nth-index-like selectors.

See [1] for some discussion around the design tradeoffs.

[1] https://bugzilla.mozilla.org/show_bug.cgi?id=1401855#c3

Fields§

§nth: NthIndexCacheInner§nth_of_selectors: NthIndexOfSelectorsCaches§nth_last: NthIndexCacheInner§nth_last_of_selectors: NthIndexOfSelectorsCaches§nth_of_type: NthIndexCacheInner§nth_last_of_type: NthIndexCacheInner

Implementations§

impl NthIndexCache

pub fn get<Impl: SelectorImpl>( &mut self, is_of_type: bool, is_from_end: bool, selectors: &[Selector<Impl>] ) -> &mut NthIndexCacheInner

Gets the appropriate cache for the given parameters.

Trait Implementations§

impl Default for NthIndexCache

fn default() -> NthIndexCache

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

Auto Trait Implementations§

impl RefUnwindSafe for NthIndexCache

impl Send for NthIndexCache

impl !Sync for NthIndexCache

impl Unpin for NthIndexCache

impl UnwindSafe for NthIndexCache

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for Twhere T: ?Sized,

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

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

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

fn into(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<U> for Twhere U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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

The type returned in the event of a conversion error.

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

Performs the conversion.