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use std::fmt;
use smallvec::SmallVec;
use html5ever::{LocalName, Namespace};
use cssparser;
use selectors::{matching, parser, visitor};
use selectors::parser::SelectorParseErrorKind;
use ElementRef;
#[derive(Debug, Clone, PartialEq)]
pub struct Selector {
pub selectors: SmallVec<[parser::Selector<Simple>; 1]>,
}
impl Selector {
pub fn parse<'t, 'i>(
selectors: &'i str,
) -> Result<Self, cssparser::ParseError<'i, SelectorParseErrorKind<'i>>> {
let mut parser_input = cssparser::ParserInput::new(selectors);
let mut parser = cssparser::Parser::new(&mut parser_input);
parser::SelectorList::parse(&Parser, &mut parser).map(|list| Selector { selectors: list.0 })
}
pub fn matches(&self, element: &ElementRef) -> bool {
let mut context = matching::MatchingContext::new(
matching::MatchingMode::Normal,
None,
None,
matching::QuirksMode::NoQuirks,
);
self.selectors
.iter()
.any(|s| matching::matches_selector(&s, 0, None, element, &mut context, &mut |_, _| {}))
}
}
struct Parser;
impl<'i> parser::Parser<'i> for Parser {
type Impl = Simple;
type Error = SelectorParseErrorKind<'i>;
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct Simple;
impl parser::SelectorImpl for Simple {
type AttrValue = String;
type Identifier = LocalName;
type ClassName = LocalName;
type LocalName = LocalName;
type NamespacePrefix = LocalName;
type NamespaceUrl = Namespace;
type BorrowedNamespaceUrl = Namespace;
type BorrowedLocalName = LocalName;
type NonTSPseudoClass = NonTSPseudoClass;
type PseudoElement = PseudoElement;
type ExtraMatchingData = String;
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum NonTSPseudoClass {}
impl parser::NonTSPseudoClass for NonTSPseudoClass {
type Impl = Simple;
fn is_active_or_hover(&self) -> bool {
false
}
}
impl parser::Visit for NonTSPseudoClass {
type Impl = Simple;
fn visit<V>(&self, _visitor: &mut V) -> bool
where
V: visitor::SelectorVisitor<Impl = Self::Impl>,
{
true
}
}
impl cssparser::ToCss for NonTSPseudoClass {
fn to_css<W>(&self, dest: &mut W) -> fmt::Result
where
W: fmt::Write,
{
dest.write_str("")
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum PseudoElement {}
impl parser::PseudoElement for PseudoElement {
type Impl = Simple;
}
impl cssparser::ToCss for PseudoElement {
fn to_css<W>(&self, dest: &mut W) -> fmt::Result
where
W: fmt::Write,
{
dest.write_str("")
}
}