Enum selectors::parser::Component [−][src]
pub enum Component<Impl: SelectorImpl> {}Show variants
Combinator(Combinator), ExplicitAnyNamespace, ExplicitNoNamespace, DefaultNamespace(Impl::NamespaceUrl), Namespace(Impl::NamespacePrefix, Impl::NamespaceUrl), ExplicitUniversalType, LocalName(LocalName<Impl>), ID(Impl::Identifier), Class(Impl::Identifier), AttributeInNoNamespaceExists { local_name: Impl::LocalName, local_name_lower: Impl::LocalName, }, AttributeInNoNamespace { local_name: Impl::LocalName, operator: AttrSelectorOperator, value: Impl::AttrValue, case_sensitivity: ParsedCaseSensitivity, never_matches: bool, }, AttributeOther(Box<AttrSelectorWithOptionalNamespace<Impl>>), Negation(Box<[Selector<Impl>]>), FirstChild, LastChild, OnlyChild, Root, Empty, Scope, NthChild(i32, i32), NthLastChild(i32, i32), NthOfType(i32, i32), NthLastOfType(i32, i32), FirstOfType, LastOfType, OnlyOfType, NonTSPseudoClass(Impl::NonTSPseudoClass), Slotted(Selector<Impl>), Part(Box<[Impl::Identifier]>), Host(Option<Selector<Impl>>), Where(Box<[Selector<Impl>]>), Is(Box<[Selector<Impl>]>), PseudoElement(Impl::PseudoElement),
A CSS simple selector or combinator. We store both in the same enum for optimal packing and cache performance, see [1].
[1] https://bugzilla.mozilla.org/show_bug.cgi?id=1357973
Variants
Combinator(Combinator)
DefaultNamespace(Impl::NamespaceUrl)
Namespace(Impl::NamespacePrefix, Impl::NamespaceUrl)
LocalName(LocalName<Impl>)
ID(Impl::Identifier)
Class(Impl::Identifier)
Show fields
Show fields
Fields of AttributeInNoNamespace
local_name: Impl::LocalName
operator: AttrSelectorOperator
value: Impl::AttrValue
case_sensitivity: ParsedCaseSensitivity
never_matches: bool
AttributeOther(Box<AttrSelectorWithOptionalNamespace<Impl>>)
Pseudo-classes
NonTSPseudoClass(Impl::NonTSPseudoClass)
Slotted(Selector<Impl>)
The ::slotted() pseudo-element:
https://drafts.csswg.org/css-scoping/#slotted-pseudo
The selector here is a compound selector, that is, no combinators.
NOTE(emilio): This should support a list of selectors, but as of this writing no other browser does, and that allows them to put ::slotted() in the rule hash, so we do that too.
See https://github.com/w3c/csswg-drafts/issues/2158
Part(Box<[Impl::Identifier]>)
The ::part
pseudo-element.
https://drafts.csswg.org/css-shadow-parts/#part
The :host
pseudo-class:
https://drafts.csswg.org/css-scoping/#host-selector
NOTE(emilio): This should support a list of selectors, but as of this writing no other browser does, and that allows them to put :host() in the rule hash, so we do that too.
See https://github.com/w3c/csswg-drafts/issues/2158
The :where
pseudo-class.
https://drafts.csswg.org/selectors/#zero-matches
The inner argument is conceptually a SelectorList, but we move the selectors to the heap to keep Component small.
The :is
pseudo-class.
https://drafts.csswg.org/selectors/#matches-pseudo
Same comment as above re. the argument.
PseudoElement(Impl::PseudoElement)
An implementation-dependent pseudo-element selector.
Implementations
impl<Impl: SelectorImpl> Component<Impl>
[src]
impl<Impl: SelectorImpl> Component<Impl>
[src]pub fn is_combinator(&self) -> bool
[src]
Returns true if this is a combinator.
pub fn as_combinator(&self) -> Option<Combinator>
[src]
Returns the value as a combinator if applicable, None otherwise.
pub fn maybe_allowed_after_pseudo_element(&self) -> bool
[src]
Whether this component is valid after a pseudo-element. Only intended for sanity-checking.
pub fn visit<V>(&self, visitor: &mut V) -> bool where
V: SelectorVisitor<Impl = Impl>,
[src]
V: SelectorVisitor<Impl = Impl>,
Trait Implementations
impl<Impl: Clone + SelectorImpl> Clone for Component<Impl> where
Impl::NamespaceUrl: Clone,
Impl::NamespacePrefix: Clone,
Impl::NamespaceUrl: Clone,
Impl::Identifier: Clone,
Impl::Identifier: Clone,
Impl::LocalName: Clone,
Impl::LocalName: Clone,
Impl::LocalName: Clone,
Impl::AttrValue: Clone,
Impl::NonTSPseudoClass: Clone,
Impl::Identifier: Clone,
Impl::PseudoElement: Clone,
[src]
impl<Impl: Clone + SelectorImpl> Clone for Component<Impl> where
Impl::NamespaceUrl: Clone,
Impl::NamespacePrefix: Clone,
Impl::NamespaceUrl: Clone,
Impl::Identifier: Clone,
Impl::Identifier: Clone,
Impl::LocalName: Clone,
Impl::LocalName: Clone,
Impl::LocalName: Clone,
Impl::AttrValue: Clone,
Impl::NonTSPseudoClass: Clone,
Impl::Identifier: Clone,
Impl::PseudoElement: Clone,
[src]impl<Impl: SelectorImpl> Debug for Component<Impl>
[src]
impl<Impl: SelectorImpl> Debug for Component<Impl>
[src]impl<Impl: Eq + SelectorImpl> Eq for Component<Impl> where
Impl::NamespaceUrl: Eq,
Impl::NamespacePrefix: Eq,
Impl::NamespaceUrl: Eq,
Impl::Identifier: Eq,
Impl::Identifier: Eq,
Impl::LocalName: Eq,
Impl::LocalName: Eq,
Impl::LocalName: Eq,
Impl::AttrValue: Eq,
Impl::NonTSPseudoClass: Eq,
Impl::Identifier: Eq,
Impl::PseudoElement: Eq,
[src]
impl<Impl: Eq + SelectorImpl> Eq for Component<Impl> where
Impl::NamespaceUrl: Eq,
Impl::NamespacePrefix: Eq,
Impl::NamespaceUrl: Eq,
Impl::Identifier: Eq,
Impl::Identifier: Eq,
Impl::LocalName: Eq,
Impl::LocalName: Eq,
Impl::LocalName: Eq,
Impl::AttrValue: Eq,
Impl::NonTSPseudoClass: Eq,
Impl::Identifier: Eq,
Impl::PseudoElement: Eq,
[src]impl<Impl: PartialEq + SelectorImpl> PartialEq<Component<Impl>> for Component<Impl> where
Impl::NamespaceUrl: PartialEq,
Impl::NamespacePrefix: PartialEq,
Impl::NamespaceUrl: PartialEq,
Impl::Identifier: PartialEq,
Impl::Identifier: PartialEq,
Impl::LocalName: PartialEq,
Impl::LocalName: PartialEq,
Impl::LocalName: PartialEq,
Impl::AttrValue: PartialEq,
Impl::NonTSPseudoClass: PartialEq,
Impl::Identifier: PartialEq,
Impl::PseudoElement: PartialEq,
[src]
impl<Impl: PartialEq + SelectorImpl> PartialEq<Component<Impl>> for Component<Impl> where
Impl::NamespaceUrl: PartialEq,
Impl::NamespacePrefix: PartialEq,
Impl::NamespaceUrl: PartialEq,
Impl::Identifier: PartialEq,
Impl::Identifier: PartialEq,
Impl::LocalName: PartialEq,
Impl::LocalName: PartialEq,
Impl::LocalName: PartialEq,
Impl::AttrValue: PartialEq,
Impl::NonTSPseudoClass: PartialEq,
Impl::Identifier: PartialEq,
Impl::PseudoElement: PartialEq,
[src]impl<Impl: SelectorImpl> StructuralEq for Component<Impl>
[src]
impl<Impl: SelectorImpl> StructuralEq for Component<Impl>
[src]impl<Impl: SelectorImpl> StructuralPartialEq for Component<Impl>
[src]
impl<Impl: SelectorImpl> StructuralPartialEq for Component<Impl>
[src]Auto Trait Implementations
impl<Impl> RefUnwindSafe for Component<Impl> where
<Impl as SelectorImpl>::AttrValue: RefUnwindSafe,
<Impl as SelectorImpl>::Identifier: RefUnwindSafe,
<Impl as SelectorImpl>::LocalName: RefUnwindSafe,
<Impl as SelectorImpl>::NamespacePrefix: RefUnwindSafe,
<Impl as SelectorImpl>::NamespaceUrl: RefUnwindSafe,
<Impl as SelectorImpl>::NonTSPseudoClass: RefUnwindSafe,
<Impl as SelectorImpl>::PseudoElement: RefUnwindSafe,
impl<Impl> RefUnwindSafe for Component<Impl> where
<Impl as SelectorImpl>::AttrValue: RefUnwindSafe,
<Impl as SelectorImpl>::Identifier: RefUnwindSafe,
<Impl as SelectorImpl>::LocalName: RefUnwindSafe,
<Impl as SelectorImpl>::NamespacePrefix: RefUnwindSafe,
<Impl as SelectorImpl>::NamespaceUrl: RefUnwindSafe,
<Impl as SelectorImpl>::NonTSPseudoClass: RefUnwindSafe,
<Impl as SelectorImpl>::PseudoElement: RefUnwindSafe,
impl<Impl> Send for Component<Impl> where
<Impl as SelectorImpl>::AttrValue: Send + Sync,
<Impl as SelectorImpl>::Identifier: Send + Sync,
<Impl as SelectorImpl>::LocalName: Send + Sync,
<Impl as SelectorImpl>::NamespacePrefix: Send + Sync,
<Impl as SelectorImpl>::NamespaceUrl: Send + Sync,
<Impl as SelectorImpl>::NonTSPseudoClass: Send + Sync,
<Impl as SelectorImpl>::PseudoElement: Send + Sync,
impl<Impl> Send for Component<Impl> where
<Impl as SelectorImpl>::AttrValue: Send + Sync,
<Impl as SelectorImpl>::Identifier: Send + Sync,
<Impl as SelectorImpl>::LocalName: Send + Sync,
<Impl as SelectorImpl>::NamespacePrefix: Send + Sync,
<Impl as SelectorImpl>::NamespaceUrl: Send + Sync,
<Impl as SelectorImpl>::NonTSPseudoClass: Send + Sync,
<Impl as SelectorImpl>::PseudoElement: Send + Sync,
impl<Impl> Sync for Component<Impl> where
<Impl as SelectorImpl>::AttrValue: Send + Sync,
<Impl as SelectorImpl>::Identifier: Send + Sync,
<Impl as SelectorImpl>::LocalName: Send + Sync,
<Impl as SelectorImpl>::NamespacePrefix: Send + Sync,
<Impl as SelectorImpl>::NamespaceUrl: Send + Sync,
<Impl as SelectorImpl>::NonTSPseudoClass: Send + Sync,
<Impl as SelectorImpl>::PseudoElement: Send + Sync,
impl<Impl> Sync for Component<Impl> where
<Impl as SelectorImpl>::AttrValue: Send + Sync,
<Impl as SelectorImpl>::Identifier: Send + Sync,
<Impl as SelectorImpl>::LocalName: Send + Sync,
<Impl as SelectorImpl>::NamespacePrefix: Send + Sync,
<Impl as SelectorImpl>::NamespaceUrl: Send + Sync,
<Impl as SelectorImpl>::NonTSPseudoClass: Send + Sync,
<Impl as SelectorImpl>::PseudoElement: Send + Sync,
impl<Impl> Unpin for Component<Impl> where
<Impl as SelectorImpl>::AttrValue: Unpin,
<Impl as SelectorImpl>::Identifier: Unpin,
<Impl as SelectorImpl>::LocalName: Unpin,
<Impl as SelectorImpl>::NamespacePrefix: Unpin,
<Impl as SelectorImpl>::NamespaceUrl: Unpin,
<Impl as SelectorImpl>::NonTSPseudoClass: Unpin,
<Impl as SelectorImpl>::PseudoElement: Unpin,
impl<Impl> Unpin for Component<Impl> where
<Impl as SelectorImpl>::AttrValue: Unpin,
<Impl as SelectorImpl>::Identifier: Unpin,
<Impl as SelectorImpl>::LocalName: Unpin,
<Impl as SelectorImpl>::NamespacePrefix: Unpin,
<Impl as SelectorImpl>::NamespaceUrl: Unpin,
<Impl as SelectorImpl>::NonTSPseudoClass: Unpin,
<Impl as SelectorImpl>::PseudoElement: Unpin,
impl<Impl> UnwindSafe for Component<Impl> where
<Impl as SelectorImpl>::AttrValue: RefUnwindSafe + UnwindSafe,
<Impl as SelectorImpl>::Identifier: RefUnwindSafe + UnwindSafe,
<Impl as SelectorImpl>::LocalName: RefUnwindSafe + UnwindSafe,
<Impl as SelectorImpl>::NamespacePrefix: RefUnwindSafe + UnwindSafe,
<Impl as SelectorImpl>::NamespaceUrl: RefUnwindSafe + UnwindSafe,
<Impl as SelectorImpl>::NonTSPseudoClass: RefUnwindSafe + UnwindSafe,
<Impl as SelectorImpl>::PseudoElement: RefUnwindSafe + UnwindSafe,
impl<Impl> UnwindSafe for Component<Impl> where
<Impl as SelectorImpl>::AttrValue: RefUnwindSafe + UnwindSafe,
<Impl as SelectorImpl>::Identifier: RefUnwindSafe + UnwindSafe,
<Impl as SelectorImpl>::LocalName: RefUnwindSafe + UnwindSafe,
<Impl as SelectorImpl>::NamespacePrefix: RefUnwindSafe + UnwindSafe,
<Impl as SelectorImpl>::NamespaceUrl: RefUnwindSafe + UnwindSafe,
<Impl as SelectorImpl>::NonTSPseudoClass: RefUnwindSafe + UnwindSafe,
<Impl as SelectorImpl>::PseudoElement: RefUnwindSafe + UnwindSafe,