Trait SelectorImpl

pub trait SelectorImpl:
    Clone
    + Debug
    + Sized
    + 'static {
    type ExtraMatchingData<'a>: Sized + Default;
    type AttrValue: Clone + Eq + for<'a> From<&'a str> + ToCss;
    type Identifier: Clone + Eq + for<'a> From<&'a str> + ToCss;
    type LocalName: Clone + Eq + for<'a> From<&'a str> + ToCss + Borrow<Self::BorrowedLocalName>;
    type NamespaceUrl: Clone + Eq + Default + Borrow<Self::BorrowedNamespaceUrl>;
    type NamespacePrefix: Clone + Eq + for<'a> From<&'a str> + ToCss + Default;
    type BorrowedNamespaceUrl: ?Sized + Eq;
    type BorrowedLocalName: ?Sized + Eq;
    type NonTSPseudoClass: Clone + Eq + NonTSPseudoClass<Impl = Self>;
    type PseudoElement: Clone + Eq + PseudoElement<Impl = Self>;

    // Provided method
    fn should_collect_attr_hash(_name: &Self::LocalName) -> bool { ... }
}

This trait allows to define the parser implementation in regards of pseudo-classes/elements

NB: We need Clone so that we can derive(Clone) on struct with that are parameterized on SelectorImpl. See https://github.com/rust-lang/rust/issues/26925

Required Associated Types

type ExtraMatchingData<'a>: Sized + Default

type AttrValue: Clone + Eq + for<'a> From<&'a str> + ToCss

type Identifier: Clone + Eq + for<'a> From<&'a str> + ToCss

type LocalName: Clone + Eq + for<'a> From<&'a str> + ToCss + Borrow<Self::BorrowedLocalName>

type NamespaceUrl: Clone + Eq + Default + Borrow<Self::BorrowedNamespaceUrl>

type NamespacePrefix: Clone + Eq + for<'a> From<&'a str> + ToCss + Default

type BorrowedNamespaceUrl: ?Sized + Eq

type BorrowedLocalName: ?Sized + Eq

type NonTSPseudoClass: Clone + Eq + NonTSPseudoClass<Impl = Self>

non tree-structural pseudo-classes (see: https://drafts.csswg.org/selectors/#structural-pseudos)

type PseudoElement: Clone + Eq + PseudoElement<Impl = Self>

pseudo-elements

Provided Methods

fn should_collect_attr_hash(_name: &Self::LocalName) -> bool

Whether attribute hashes should be collected for filtering purposes.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl SelectorImpl for Simple