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LibWeb: Make :host() take a <compound-selector>

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This matches the spec:
https://drafts.csswg.org/css-scoping-1/#selectordef-host
This commit is contained in:
Sam Atkins 2023-08-12 13:47:45 +01:00 • committed by Andreas Kling
parent b314a115ca
commit b684bab5f1
4 changed files with 23 additions and 1 deletions
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18
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
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@ -633,6 +633,24 @@ Parser::ParseErrorOr<Selector::SimpleSelector> Parser::parse_pseudo_simple_selec
return parse_nth_child_selector(pseudo_class, pseudo_function.values(), false);
case PseudoClassMetadata::ParameterType::ANPlusBOf:
return parse_nth_child_selector(pseudo_class, pseudo_function.values(), true);
case PseudoClassMetadata::ParameterType::CompoundSelector: {
auto function_token_stream = TokenStream(pseudo_function.values());
auto compound_selector = MUST(parse_compound_selector(function_token_stream));
if (!compound_selector.has_value()) {
dbgln_if(CSS_PARSER_DEBUG, "Failed to parse :{}() parameter as a compound selector", pseudo_function.name());
return ParseError::SyntaxError;
}
Vector compound_selectors { compound_selector.release_value() };
auto selector = Selector::create(move(compound_selectors));
return Selector::SimpleSelector {
.type = Selector::SimpleSelector::Type::PseudoClass,
.value = Selector::SimpleSelector::PseudoClassSelector {
.type = pseudo_class,
.argument_selector_list = { move(selector) } }
};
}
case PseudoClassMetadata::ParameterType::ForgivingSelectorList: {
auto function_token_stream = TokenStream(pseudo_function.values());
// NOTE: Because it's forgiving, even complete garbage will parse OK as an empty selector-list.