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@@ -31,7 +31,6 @@
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#include <LibWeb/CSS/Parser/Function.h>
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#include <LibWeb/CSS/Parser/Parser.h>
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#include <LibWeb/CSS/Parser/Rule.h>
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-#include <LibWeb/CSS/PseudoClass.h>
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#include <LibWeb/CSS/Selector.h>
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#include <LibWeb/CSS/StyleValue.h>
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#include <LibWeb/CSS/StyleValues/AngleStyleValue.h>
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@@ -166,635 +165,6 @@ CSSStyleSheet* Parser::parse_as_css_stylesheet(Optional<AK::URL> location)
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return CSSStyleSheet::create(m_context.realm(), rule_list, media_list, move(location));
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}
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-Optional<SelectorList> Parser::parse_as_selector(SelectorParsingMode parsing_mode)
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-{
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- auto selector_list = parse_a_selector_list(m_token_stream, SelectorType::Standalone, parsing_mode);
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- if (!selector_list.is_error())
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- return selector_list.release_value();
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-
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- return {};
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-}
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-
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-Optional<SelectorList> Parser::parse_as_relative_selector(SelectorParsingMode parsing_mode)
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-{
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- auto selector_list = parse_a_selector_list(m_token_stream, SelectorType::Relative, parsing_mode);
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- if (!selector_list.is_error())
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- return selector_list.release_value();
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-
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- return {};
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-}
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-
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-template<typename T>
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-Parser::ParseErrorOr<SelectorList> Parser::parse_a_selector_list(TokenStream<T>& tokens, SelectorType mode, SelectorParsingMode parsing_mode)
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-{
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- auto comma_separated_lists = parse_a_comma_separated_list_of_component_values(tokens);
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-
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- Vector<NonnullRefPtr<Selector>> selectors;
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- for (auto& selector_parts : comma_separated_lists) {
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- auto stream = TokenStream(selector_parts);
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- auto selector = parse_complex_selector(stream, mode);
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- if (selector.is_error()) {
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- if (parsing_mode == SelectorParsingMode::Forgiving)
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- continue;
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- return selector.error();
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- }
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- selectors.append(selector.release_value());
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- }
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-
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- if (selectors.is_empty() && parsing_mode != SelectorParsingMode::Forgiving)
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- return ParseError::SyntaxError;
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-
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- return selectors;
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-}
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-
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-Parser::ParseErrorOr<NonnullRefPtr<Selector>> Parser::parse_complex_selector(TokenStream<ComponentValue>& tokens, SelectorType mode)
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-{
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- Vector<Selector::CompoundSelector> compound_selectors;
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-
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- auto first_selector = TRY(parse_compound_selector(tokens));
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- if (!first_selector.has_value())
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- return ParseError::SyntaxError;
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-
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- if (mode == SelectorType::Standalone) {
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- if (first_selector->combinator != Selector::Combinator::Descendant)
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- return ParseError::SyntaxError;
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- first_selector->combinator = Selector::Combinator::None;
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- }
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- compound_selectors.append(first_selector.release_value());
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-
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- while (tokens.has_next_token()) {
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- auto compound_selector = TRY(parse_compound_selector(tokens));
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- if (!compound_selector.has_value())
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- break;
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- compound_selectors.append(compound_selector.release_value());
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- }
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-
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- if (compound_selectors.is_empty())
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- return ParseError::SyntaxError;
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-
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- return Selector::create(move(compound_selectors));
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-}
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-
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-Parser::ParseErrorOr<Optional<Selector::CompoundSelector>> Parser::parse_compound_selector(TokenStream<ComponentValue>& tokens)
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-{
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- tokens.skip_whitespace();
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-
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- auto combinator = parse_selector_combinator(tokens).value_or(Selector::Combinator::Descendant);
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-
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- tokens.skip_whitespace();
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-
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- Vector<Selector::SimpleSelector> simple_selectors;
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-
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- while (tokens.has_next_token()) {
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- auto component = TRY(parse_simple_selector(tokens));
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- if (!component.has_value())
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- break;
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- simple_selectors.append(component.release_value());
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- }
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-
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- if (simple_selectors.is_empty())
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- return Optional<Selector::CompoundSelector> {};
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-
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- return Selector::CompoundSelector { combinator, move(simple_selectors) };
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-}
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-
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-Optional<Selector::Combinator> Parser::parse_selector_combinator(TokenStream<ComponentValue>& tokens)
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-{
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- auto const& current_value = tokens.next_token();
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- if (current_value.is(Token::Type::Delim)) {
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- switch (current_value.token().delim()) {
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- case '>':
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- return Selector::Combinator::ImmediateChild;
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- case '+':
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- return Selector::Combinator::NextSibling;
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- case '~':
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- return Selector::Combinator::SubsequentSibling;
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- case '|': {
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- auto const& next = tokens.peek_token();
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- if (next.is(Token::Type::EndOfFile))
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- return {};
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-
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- if (next.is_delim('|')) {
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- tokens.next_token();
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- return Selector::Combinator::Column;
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- }
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- }
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- }
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- }
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-
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- tokens.reconsume_current_input_token();
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- return {};
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-}
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-
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-Optional<Selector::SimpleSelector::QualifiedName> Parser::parse_selector_qualified_name(TokenStream<ComponentValue>& tokens, AllowWildcardName allow_wildcard_name)
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-{
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- auto is_name = [](ComponentValue const& token) {
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- return token.is_delim('*') || token.is(Token::Type::Ident);
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- };
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- auto get_name = [](ComponentValue const& token) {
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- if (token.is_delim('*'))
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- return FlyString::from_utf8("*"sv);
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- return FlyString::from_utf8(token.token().ident());
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- };
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-
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- // There are 3 possibilities here:
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- // (Where <name> and <namespace> are either an <ident> or a `*` delim)
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- // 1) `|<name>`
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- // 2) `<namespace>|<name>`
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- // 3) `<name>`
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- // Whitespace is forbidden between any of these parts. https://www.w3.org/TR/selectors-4/#white-space
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-
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- auto transaction = tokens.begin_transaction();
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-
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- auto first_token = tokens.next_token();
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- if (first_token.is_delim('|')) {
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- // Case 1: `|<name>`
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- if (is_name(tokens.peek_token())) {
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- auto name_token = tokens.next_token();
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-
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- if (allow_wildcard_name == AllowWildcardName::No && name_token.is_delim('*'))
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- return {};
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-
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- transaction.commit();
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- return Selector::SimpleSelector::QualifiedName {
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- .namespace_type = Selector::SimpleSelector::QualifiedName::NamespaceType::None,
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- .name = get_name(name_token).release_value_but_fixme_should_propagate_errors(),
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- };
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- }
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- return {};
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- }
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-
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- if (!is_name(first_token))
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- return {};
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-
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- if (tokens.peek_token().is_delim('|') && is_name(tokens.peek_token(1))) {
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- // Case 2: `<namespace>|<name>`
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- (void)tokens.next_token(); // `|`
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- auto namespace_ = get_name(first_token).release_value_but_fixme_should_propagate_errors();
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- auto name = get_name(tokens.next_token()).release_value_but_fixme_should_propagate_errors();
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-
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- if (allow_wildcard_name == AllowWildcardName::No && name == "*"sv)
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- return {};
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-
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- auto namespace_type = namespace_ == "*"sv
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- ? Selector::SimpleSelector::QualifiedName::NamespaceType::Any
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- : Selector::SimpleSelector::QualifiedName::NamespaceType::Named;
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-
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- transaction.commit();
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- return Selector::SimpleSelector::QualifiedName {
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- .namespace_type = namespace_type,
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- .namespace_ = namespace_,
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- .name = name,
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- };
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- }
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-
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- // Case 3: `<name>`
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- auto& name_token = first_token;
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- if (allow_wildcard_name == AllowWildcardName::No && name_token.is_delim('*'))
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- return {};
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-
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- transaction.commit();
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- return Selector::SimpleSelector::QualifiedName {
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- .namespace_type = Selector::SimpleSelector::QualifiedName::NamespaceType::Default,
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- .name = get_name(name_token).release_value_but_fixme_should_propagate_errors(),
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- };
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-}
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-
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-Parser::ParseErrorOr<Selector::SimpleSelector> Parser::parse_attribute_simple_selector(ComponentValue const& first_value)
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-{
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- auto attribute_tokens = TokenStream { first_value.block().values() };
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-
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- attribute_tokens.skip_whitespace();
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-
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- if (!attribute_tokens.has_next_token()) {
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- dbgln_if(CSS_PARSER_DEBUG, "CSS attribute selector is empty!");
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- return ParseError::SyntaxError;
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- }
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-
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- auto maybe_qualified_name = parse_selector_qualified_name(attribute_tokens, AllowWildcardName::No);
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- if (!maybe_qualified_name.has_value()) {
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- dbgln_if(CSS_PARSER_DEBUG, "Expected qualified-name for attribute name, got: '{}'", attribute_tokens.peek_token().to_debug_string());
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- return ParseError::SyntaxError;
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- }
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-
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- Selector::SimpleSelector simple_selector {
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- .type = Selector::SimpleSelector::Type::Attribute,
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- .value = Selector::SimpleSelector::Attribute {
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- .match_type = Selector::SimpleSelector::Attribute::MatchType::HasAttribute,
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- // FIXME: Case-sensitivity is defined by the document language.
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- // HTML is insensitive with attribute names, and our code generally assumes
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- // they are converted to lowercase, so we do that here too. If we want to be
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- // correct with XML later, we'll need to keep the original case and then do
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- // a case-insensitive compare later.
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- .qualified_name = maybe_qualified_name.release_value(),
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- .case_type = Selector::SimpleSelector::Attribute::CaseType::DefaultMatch,
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- }
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- };
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-
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- attribute_tokens.skip_whitespace();
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- if (!attribute_tokens.has_next_token())
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- return simple_selector;
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-
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- auto const& delim_part = attribute_tokens.next_token();
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- if (!delim_part.is(Token::Type::Delim)) {
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- dbgln_if(CSS_PARSER_DEBUG, "Expected a delim for attribute comparison, got: '{}'", delim_part.to_debug_string());
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- return ParseError::SyntaxError;
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- }
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-
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- if (delim_part.token().delim() == '=') {
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- simple_selector.attribute().match_type = Selector::SimpleSelector::Attribute::MatchType::ExactValueMatch;
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- } else {
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- if (!attribute_tokens.has_next_token()) {
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- dbgln_if(CSS_PARSER_DEBUG, "Attribute selector ended part way through a match type.");
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- return ParseError::SyntaxError;
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- }
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-
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- auto const& delim_second_part = attribute_tokens.next_token();
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- if (!delim_second_part.is_delim('=')) {
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- dbgln_if(CSS_PARSER_DEBUG, "Expected a double delim for attribute comparison, got: '{}{}'", delim_part.to_debug_string(), delim_second_part.to_debug_string());
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- return ParseError::SyntaxError;
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- }
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- switch (delim_part.token().delim()) {
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- case '~':
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- simple_selector.attribute().match_type = Selector::SimpleSelector::Attribute::MatchType::ContainsWord;
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- break;
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- case '*':
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- simple_selector.attribute().match_type = Selector::SimpleSelector::Attribute::MatchType::ContainsString;
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- break;
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- case '|':
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- simple_selector.attribute().match_type = Selector::SimpleSelector::Attribute::MatchType::StartsWithSegment;
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- break;
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- case '^':
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- simple_selector.attribute().match_type = Selector::SimpleSelector::Attribute::MatchType::StartsWithString;
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- break;
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- case '$':
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- simple_selector.attribute().match_type = Selector::SimpleSelector::Attribute::MatchType::EndsWithString;
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- break;
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- default:
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- attribute_tokens.reconsume_current_input_token();
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- }
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- }
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-
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- attribute_tokens.skip_whitespace();
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- if (!attribute_tokens.has_next_token()) {
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- dbgln_if(CSS_PARSER_DEBUG, "Attribute selector ended without a value to match.");
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- return ParseError::SyntaxError;
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- }
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-
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- auto const& value_part = attribute_tokens.next_token();
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- if (!value_part.is(Token::Type::Ident) && !value_part.is(Token::Type::String)) {
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- dbgln_if(CSS_PARSER_DEBUG, "Expected a string or ident for the value to match attribute against, got: '{}'", value_part.to_debug_string());
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- return ParseError::SyntaxError;
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- }
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- auto value_string_view = value_part.token().is(Token::Type::Ident) ? value_part.token().ident() : value_part.token().string();
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- simple_selector.attribute().value = String::from_utf8(value_string_view).release_value_but_fixme_should_propagate_errors();
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-
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- attribute_tokens.skip_whitespace();
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- // Handle case-sensitivity suffixes. https://www.w3.org/TR/selectors-4/#attribute-case
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- if (attribute_tokens.has_next_token()) {
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- auto const& case_sensitivity_part = attribute_tokens.next_token();
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- if (case_sensitivity_part.is(Token::Type::Ident)) {
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- auto case_sensitivity = case_sensitivity_part.token().ident();
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- if (case_sensitivity.equals_ignoring_ascii_case("i"sv)) {
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- simple_selector.attribute().case_type = Selector::SimpleSelector::Attribute::CaseType::CaseInsensitiveMatch;
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- } else if (case_sensitivity.equals_ignoring_ascii_case("s"sv)) {
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- simple_selector.attribute().case_type = Selector::SimpleSelector::Attribute::CaseType::CaseSensitiveMatch;
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- } else {
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- dbgln_if(CSS_PARSER_DEBUG, "Expected a \"i\" or \"s\" attribute selector case sensitivity identifier, got: '{}'", case_sensitivity_part.to_debug_string());
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- return ParseError::SyntaxError;
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- }
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- } else {
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- dbgln_if(CSS_PARSER_DEBUG, "Expected an attribute selector case sensitivity identifier, got: '{}'", case_sensitivity_part.to_debug_string());
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- return ParseError::SyntaxError;
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- }
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- }
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-
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- if (attribute_tokens.has_next_token()) {
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- dbgln_if(CSS_PARSER_DEBUG, "Was not expecting anything else inside attribute selector.");
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- return ParseError::SyntaxError;
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- }
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-
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- return simple_selector;
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-}
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-
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-Parser::ParseErrorOr<Selector::SimpleSelector> Parser::parse_pseudo_simple_selector(TokenStream<ComponentValue>& tokens)
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-{
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- auto peek_token_ends_selector = [&]() -> bool {
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- auto const& value = tokens.peek_token();
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- return (value.is(Token::Type::EndOfFile) || value.is(Token::Type::Whitespace) || value.is(Token::Type::Comma));
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- };
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-
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- if (peek_token_ends_selector())
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- return ParseError::SyntaxError;
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-
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- bool is_pseudo = false;
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- if (tokens.peek_token().is(Token::Type::Colon)) {
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- is_pseudo = true;
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- tokens.next_token();
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- if (peek_token_ends_selector())
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- return ParseError::SyntaxError;
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- }
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-
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- if (is_pseudo) {
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- auto const& name_token = tokens.next_token();
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- if (!name_token.is(Token::Type::Ident)) {
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- dbgln_if(CSS_PARSER_DEBUG, "Expected an ident for pseudo-element, got: '{}'", name_token.to_debug_string());
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- return ParseError::SyntaxError;
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- }
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-
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- auto pseudo_name = name_token.token().ident();
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- auto pseudo_element = pseudo_element_from_string(pseudo_name);
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-
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- // Note: We allow the "ignored" -webkit prefix here for -webkit-progress-bar/-webkit-progress-bar
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- if (!pseudo_element.has_value() && has_ignored_vendor_prefix(pseudo_name))
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- return ParseError::IncludesIgnoredVendorPrefix;
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-
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- if (!pseudo_element.has_value()) {
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- dbgln_if(CSS_PARSER_DEBUG, "Unrecognized pseudo-element: '::{}'", pseudo_name);
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- return ParseError::SyntaxError;
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- }
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-
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- return Selector::SimpleSelector {
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- .type = Selector::SimpleSelector::Type::PseudoElement,
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- .value = pseudo_element.value()
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- };
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- }
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-
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- if (peek_token_ends_selector())
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- return ParseError::SyntaxError;
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-
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- auto const& pseudo_class_token = tokens.next_token();
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-
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- if (pseudo_class_token.is(Token::Type::Ident)) {
|
|
|
- auto pseudo_name = pseudo_class_token.token().ident();
|
|
|
- if (has_ignored_vendor_prefix(pseudo_name))
|
|
|
- return ParseError::IncludesIgnoredVendorPrefix;
|
|
|
-
|
|
|
- auto make_pseudo_class_selector = [](auto pseudo_class) {
|
|
|
- return Selector::SimpleSelector {
|
|
|
- .type = Selector::SimpleSelector::Type::PseudoClass,
|
|
|
- .value = Selector::SimpleSelector::PseudoClassSelector { .type = pseudo_class }
|
|
|
- };
|
|
|
- };
|
|
|
-
|
|
|
- if (auto pseudo_class = pseudo_class_from_string(pseudo_name); pseudo_class.has_value()) {
|
|
|
- if (!pseudo_class_metadata(pseudo_class.value()).is_valid_as_identifier) {
|
|
|
- dbgln_if(CSS_PARSER_DEBUG, "Pseudo-class ':{}' is only valid as a function", pseudo_name);
|
|
|
- return ParseError::SyntaxError;
|
|
|
- }
|
|
|
- return make_pseudo_class_selector(pseudo_class.value());
|
|
|
- }
|
|
|
-
|
|
|
- // Single-colon syntax allowed for ::after, ::before, ::first-letter and ::first-line for compatibility.
|
|
|
- // https://www.w3.org/TR/selectors/#pseudo-element-syntax
|
|
|
- if (auto pseudo_element = pseudo_element_from_string(pseudo_name); pseudo_element.has_value()) {
|
|
|
- switch (pseudo_element.value()) {
|
|
|
- case Selector::PseudoElement::After:
|
|
|
- case Selector::PseudoElement::Before:
|
|
|
- case Selector::PseudoElement::FirstLetter:
|
|
|
- case Selector::PseudoElement::FirstLine:
|
|
|
- return Selector::SimpleSelector {
|
|
|
- .type = Selector::SimpleSelector::Type::PseudoElement,
|
|
|
- .value = pseudo_element.value()
|
|
|
- };
|
|
|
- default:
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- dbgln_if(CSS_PARSER_DEBUG, "Unrecognized pseudo-class: ':{}'", pseudo_name);
|
|
|
- return ParseError::SyntaxError;
|
|
|
- }
|
|
|
-
|
|
|
- if (pseudo_class_token.is_function()) {
|
|
|
- auto parse_nth_child_selector = [this](auto pseudo_class, Vector<ComponentValue> const& function_values, bool allow_of = false) -> ParseErrorOr<Selector::SimpleSelector> {
|
|
|
- auto tokens = TokenStream<ComponentValue>(function_values);
|
|
|
- auto nth_child_pattern = parse_a_n_plus_b_pattern(tokens);
|
|
|
- if (!nth_child_pattern.has_value()) {
|
|
|
- dbgln_if(CSS_PARSER_DEBUG, "!!! Invalid An+B format for {}", pseudo_class_name(pseudo_class));
|
|
|
- return ParseError::SyntaxError;
|
|
|
- }
|
|
|
-
|
|
|
- tokens.skip_whitespace();
|
|
|
- if (!tokens.has_next_token()) {
|
|
|
- return Selector::SimpleSelector {
|
|
|
- .type = Selector::SimpleSelector::Type::PseudoClass,
|
|
|
- .value = Selector::SimpleSelector::PseudoClassSelector {
|
|
|
- .type = pseudo_class,
|
|
|
- .nth_child_pattern = nth_child_pattern.release_value() }
|
|
|
- };
|
|
|
- }
|
|
|
-
|
|
|
- if (!allow_of)
|
|
|
- return ParseError::SyntaxError;
|
|
|
-
|
|
|
- // Parse the `of <selector-list>` syntax
|
|
|
- auto const& maybe_of = tokens.next_token();
|
|
|
- if (!(maybe_of.is(Token::Type::Ident) && maybe_of.token().ident().equals_ignoring_ascii_case("of"sv)))
|
|
|
- return ParseError::SyntaxError;
|
|
|
-
|
|
|
- tokens.skip_whitespace();
|
|
|
- auto selector_list = TRY(parse_a_selector_list(tokens, SelectorType::Standalone));
|
|
|
-
|
|
|
- tokens.skip_whitespace();
|
|
|
- if (tokens.has_next_token())
|
|
|
- return ParseError::SyntaxError;
|
|
|
-
|
|
|
- return Selector::SimpleSelector {
|
|
|
- .type = Selector::SimpleSelector::Type::PseudoClass,
|
|
|
- .value = Selector::SimpleSelector::PseudoClassSelector {
|
|
|
- .type = pseudo_class,
|
|
|
- .nth_child_pattern = nth_child_pattern.release_value(),
|
|
|
- .argument_selector_list = move(selector_list) }
|
|
|
- };
|
|
|
- };
|
|
|
-
|
|
|
- auto const& pseudo_function = pseudo_class_token.function();
|
|
|
- auto maybe_pseudo_class = pseudo_class_from_string(pseudo_function.name());
|
|
|
- if (!maybe_pseudo_class.has_value()) {
|
|
|
- dbgln_if(CSS_PARSER_DEBUG, "Unrecognized pseudo-class function: ':{}'()", pseudo_function.name());
|
|
|
- return ParseError::SyntaxError;
|
|
|
- }
|
|
|
- auto pseudo_class = maybe_pseudo_class.value();
|
|
|
- auto metadata = pseudo_class_metadata(pseudo_class);
|
|
|
-
|
|
|
- if (!metadata.is_valid_as_function) {
|
|
|
- dbgln_if(CSS_PARSER_DEBUG, "Pseudo-class ':{}' is not valid as a function", pseudo_function.name());
|
|
|
- return ParseError::SyntaxError;
|
|
|
- }
|
|
|
-
|
|
|
- if (pseudo_function.values().is_empty()) {
|
|
|
- dbgln_if(CSS_PARSER_DEBUG, "Empty :{}() selector", pseudo_function.name());
|
|
|
- return ParseError::SyntaxError;
|
|
|
- }
|
|
|
-
|
|
|
- switch (metadata.parameter_type) {
|
|
|
- case PseudoClassMetadata::ParameterType::ANPlusB:
|
|
|
- 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_or_error = parse_compound_selector(function_token_stream);
|
|
|
- if (compound_selector_or_error.is_error() || !compound_selector_or_error.value().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_or_error.release_value().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.
|
|
|
- auto argument_selector_list = MUST(parse_a_selector_list(function_token_stream, SelectorType::Standalone, SelectorParsingMode::Forgiving));
|
|
|
-
|
|
|
- return Selector::SimpleSelector {
|
|
|
- .type = Selector::SimpleSelector::Type::PseudoClass,
|
|
|
- .value = Selector::SimpleSelector::PseudoClassSelector {
|
|
|
- .type = pseudo_class,
|
|
|
- .argument_selector_list = move(argument_selector_list) }
|
|
|
- };
|
|
|
- }
|
|
|
- case PseudoClassMetadata::ParameterType::LanguageRanges: {
|
|
|
- Vector<FlyString> languages;
|
|
|
- auto function_token_stream = TokenStream(pseudo_function.values());
|
|
|
- auto language_token_lists = parse_a_comma_separated_list_of_component_values(function_token_stream);
|
|
|
-
|
|
|
- for (auto language_token_list : language_token_lists) {
|
|
|
- auto language_token_stream = TokenStream(language_token_list);
|
|
|
- language_token_stream.skip_whitespace();
|
|
|
- auto language_token = language_token_stream.next_token();
|
|
|
- if (!(language_token.is(Token::Type::Ident) || language_token.is(Token::Type::String))) {
|
|
|
- dbgln_if(CSS_PARSER_DEBUG, "Invalid language range in :{}() - not a string/ident", pseudo_function.name());
|
|
|
- return ParseError::SyntaxError;
|
|
|
- }
|
|
|
-
|
|
|
- auto language_string = language_token.is(Token::Type::String) ? language_token.token().string() : language_token.token().ident();
|
|
|
- languages.append(MUST(FlyString::from_utf8(language_string)));
|
|
|
-
|
|
|
- language_token_stream.skip_whitespace();
|
|
|
- if (language_token_stream.has_next_token()) {
|
|
|
- dbgln_if(CSS_PARSER_DEBUG, "Invalid language range in :{}() - trailing tokens", pseudo_function.name());
|
|
|
- return ParseError::SyntaxError;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return Selector::SimpleSelector {
|
|
|
- .type = Selector::SimpleSelector::Type::PseudoClass,
|
|
|
- .value = Selector::SimpleSelector::PseudoClassSelector {
|
|
|
- .type = pseudo_class,
|
|
|
- .languages = move(languages) }
|
|
|
- };
|
|
|
- }
|
|
|
- case PseudoClassMetadata::ParameterType::SelectorList: {
|
|
|
- auto function_token_stream = TokenStream(pseudo_function.values());
|
|
|
- auto not_selector = TRY(parse_a_selector_list(function_token_stream, SelectorType::Standalone));
|
|
|
-
|
|
|
- return Selector::SimpleSelector {
|
|
|
- .type = Selector::SimpleSelector::Type::PseudoClass,
|
|
|
- .value = Selector::SimpleSelector::PseudoClassSelector {
|
|
|
- .type = pseudo_class,
|
|
|
- .argument_selector_list = move(not_selector) }
|
|
|
- };
|
|
|
- }
|
|
|
- case PseudoClassMetadata::ParameterType::None:
|
|
|
- // `None` means this is not a function-type pseudo-class, so this state should be impossible.
|
|
|
- VERIFY_NOT_REACHED();
|
|
|
- }
|
|
|
- }
|
|
|
- dbgln_if(CSS_PARSER_DEBUG, "Unexpected Block in pseudo-class name, expected a function or identifier. '{}'", pseudo_class_token.to_debug_string());
|
|
|
- return ParseError::SyntaxError;
|
|
|
-}
|
|
|
-
|
|
|
-Parser::ParseErrorOr<Optional<Selector::SimpleSelector>> Parser::parse_simple_selector(TokenStream<ComponentValue>& tokens)
|
|
|
-{
|
|
|
- auto peek_token_ends_selector = [&]() -> bool {
|
|
|
- auto const& value = tokens.peek_token();
|
|
|
- return (value.is(Token::Type::EndOfFile) || value.is(Token::Type::Whitespace) || value.is(Token::Type::Comma));
|
|
|
- };
|
|
|
-
|
|
|
- if (peek_token_ends_selector())
|
|
|
- return Optional<Selector::SimpleSelector> {};
|
|
|
-
|
|
|
- // Handle universal and tag-name types together, since both can be namespaced
|
|
|
- if (auto qualified_name = parse_selector_qualified_name(tokens, AllowWildcardName::Yes); qualified_name.has_value()) {
|
|
|
- if (qualified_name->name.name == "*"sv) {
|
|
|
- return Selector::SimpleSelector {
|
|
|
- .type = Selector::SimpleSelector::Type::Universal,
|
|
|
- .value = qualified_name.release_value(),
|
|
|
- };
|
|
|
- }
|
|
|
- return Selector::SimpleSelector {
|
|
|
- .type = Selector::SimpleSelector::Type::TagName,
|
|
|
- .value = qualified_name.release_value(),
|
|
|
- };
|
|
|
- }
|
|
|
-
|
|
|
- auto const& first_value = tokens.next_token();
|
|
|
-
|
|
|
- if (first_value.is(Token::Type::Delim)) {
|
|
|
- u32 delim = first_value.token().delim();
|
|
|
- switch (delim) {
|
|
|
- case '*':
|
|
|
- // Handled already
|
|
|
- VERIFY_NOT_REACHED();
|
|
|
- case '.': {
|
|
|
- if (peek_token_ends_selector())
|
|
|
- return ParseError::SyntaxError;
|
|
|
-
|
|
|
- auto const& class_name_value = tokens.next_token();
|
|
|
- if (!class_name_value.is(Token::Type::Ident)) {
|
|
|
- dbgln_if(CSS_PARSER_DEBUG, "Expected an ident after '.', got: {}", class_name_value.to_debug_string());
|
|
|
- return ParseError::SyntaxError;
|
|
|
- }
|
|
|
- return Selector::SimpleSelector {
|
|
|
- .type = Selector::SimpleSelector::Type::Class,
|
|
|
- .value = Selector::SimpleSelector::Name { FlyString::from_utf8(class_name_value.token().ident()).release_value_but_fixme_should_propagate_errors() }
|
|
|
- };
|
|
|
- }
|
|
|
- case '>':
|
|
|
- case '+':
|
|
|
- case '~':
|
|
|
- case '|':
|
|
|
- // Whitespace is not required between the compound-selector and a combinator.
|
|
|
- // So, if we see a combinator, return that this compound-selector is done, instead of a syntax error.
|
|
|
- tokens.reconsume_current_input_token();
|
|
|
- return Optional<Selector::SimpleSelector> {};
|
|
|
- default:
|
|
|
- dbgln_if(CSS_PARSER_DEBUG, "!!! Invalid simple selector!");
|
|
|
- return ParseError::SyntaxError;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if (first_value.is(Token::Type::Hash)) {
|
|
|
- if (first_value.token().hash_type() != Token::HashType::Id) {
|
|
|
- dbgln_if(CSS_PARSER_DEBUG, "Selector contains hash token that is not an id: {}", first_value.to_debug_string());
|
|
|
- return ParseError::SyntaxError;
|
|
|
- }
|
|
|
- return Selector::SimpleSelector {
|
|
|
- .type = Selector::SimpleSelector::Type::Id,
|
|
|
- .value = Selector::SimpleSelector::Name { FlyString::from_utf8(first_value.token().hash_value()).release_value_but_fixme_should_propagate_errors() }
|
|
|
- };
|
|
|
- }
|
|
|
-
|
|
|
- if (first_value.is_block() && first_value.block().is_square())
|
|
|
- return TRY(parse_attribute_simple_selector(first_value));
|
|
|
-
|
|
|
- if (first_value.is(Token::Type::Colon))
|
|
|
- return TRY(parse_pseudo_simple_selector(tokens));
|
|
|
-
|
|
|
- dbgln_if(CSS_PARSER_DEBUG, "!!! Invalid simple selector!");
|
|
|
- return ParseError::SyntaxError;
|
|
|
-}
|
|
|
-
|
|
|
RefPtr<Supports> Parser::parse_as_supports()
|
|
|
{
|
|
|
return parse_a_supports(m_token_stream);
|
|
|
@@ -7323,308 +6693,6 @@ ErrorOr<Parser::PropertyAndValue> Parser::parse_css_value_for_properties(Readonl
|
|
|
return PropertyAndValue { property_ids.first(), nullptr };
|
|
|
}
|
|
|
|
|
|
-Optional<Selector::SimpleSelector::ANPlusBPattern> Parser::parse_a_n_plus_b_pattern(TokenStream<ComponentValue>& values)
|
|
|
-{
|
|
|
- auto transaction = values.begin_transaction();
|
|
|
- auto syntax_error = [&]() -> Optional<Selector::SimpleSelector::ANPlusBPattern> {
|
|
|
- if constexpr (CSS_PARSER_DEBUG) {
|
|
|
- dbgln_if(CSS_PARSER_DEBUG, "Invalid An+B value:");
|
|
|
- values.dump_all_tokens();
|
|
|
- }
|
|
|
- return {};
|
|
|
- };
|
|
|
-
|
|
|
- auto is_n = [](ComponentValue const& value) -> bool {
|
|
|
- return value.is(Token::Type::Ident) && value.token().ident().equals_ignoring_ascii_case("n"sv);
|
|
|
- };
|
|
|
- auto is_ndash = [](ComponentValue const& value) -> bool {
|
|
|
- return value.is(Token::Type::Ident) && value.token().ident().equals_ignoring_ascii_case("n-"sv);
|
|
|
- };
|
|
|
- auto is_dashn = [](ComponentValue const& value) -> bool {
|
|
|
- return value.is(Token::Type::Ident) && value.token().ident().equals_ignoring_ascii_case("-n"sv);
|
|
|
- };
|
|
|
- auto is_dashndash = [](ComponentValue const& value) -> bool {
|
|
|
- return value.is(Token::Type::Ident) && value.token().ident().equals_ignoring_ascii_case("-n-"sv);
|
|
|
- };
|
|
|
- auto is_sign = [](ComponentValue const& value) -> bool {
|
|
|
- return value.is(Token::Type::Delim) && (value.token().delim() == '+' || value.token().delim() == '-');
|
|
|
- };
|
|
|
- auto is_n_dimension = [](ComponentValue const& value) -> bool {
|
|
|
- if (!value.is(Token::Type::Dimension))
|
|
|
- return false;
|
|
|
- if (!value.token().number().is_integer())
|
|
|
- return false;
|
|
|
- if (!value.token().dimension_unit().equals_ignoring_ascii_case("n"sv))
|
|
|
- return false;
|
|
|
- return true;
|
|
|
- };
|
|
|
- auto is_ndash_dimension = [](ComponentValue const& value) -> bool {
|
|
|
- if (!value.is(Token::Type::Dimension))
|
|
|
- return false;
|
|
|
- if (!value.token().number().is_integer())
|
|
|
- return false;
|
|
|
- if (!value.token().dimension_unit().equals_ignoring_ascii_case("n-"sv))
|
|
|
- return false;
|
|
|
- return true;
|
|
|
- };
|
|
|
- auto is_ndashdigit_dimension = [](ComponentValue const& value) -> bool {
|
|
|
- if (!value.is(Token::Type::Dimension))
|
|
|
- return false;
|
|
|
- if (!value.token().number().is_integer())
|
|
|
- return false;
|
|
|
- auto dimension_unit = value.token().dimension_unit();
|
|
|
- if (!dimension_unit.starts_with("n-"sv, CaseSensitivity::CaseInsensitive))
|
|
|
- return false;
|
|
|
- for (size_t i = 2; i < dimension_unit.length(); ++i) {
|
|
|
- if (!is_ascii_digit(dimension_unit[i]))
|
|
|
- return false;
|
|
|
- }
|
|
|
- return true;
|
|
|
- };
|
|
|
- auto is_ndashdigit_ident = [](ComponentValue const& value) -> bool {
|
|
|
- if (!value.is(Token::Type::Ident))
|
|
|
- return false;
|
|
|
- auto ident = value.token().ident();
|
|
|
- if (!ident.starts_with("n-"sv, CaseSensitivity::CaseInsensitive))
|
|
|
- return false;
|
|
|
- for (size_t i = 2; i < ident.length(); ++i) {
|
|
|
- if (!is_ascii_digit(ident[i]))
|
|
|
- return false;
|
|
|
- }
|
|
|
- return true;
|
|
|
- };
|
|
|
- auto is_dashndashdigit_ident = [](ComponentValue const& value) -> bool {
|
|
|
- if (!value.is(Token::Type::Ident))
|
|
|
- return false;
|
|
|
- auto ident = value.token().ident();
|
|
|
- if (!ident.starts_with("-n-"sv, CaseSensitivity::CaseInsensitive))
|
|
|
- return false;
|
|
|
- if (ident.length() == 3)
|
|
|
- return false;
|
|
|
- for (size_t i = 3; i < ident.length(); ++i) {
|
|
|
- if (!is_ascii_digit(ident[i]))
|
|
|
- return false;
|
|
|
- }
|
|
|
- return true;
|
|
|
- };
|
|
|
- auto is_integer = [](ComponentValue const& value) -> bool {
|
|
|
- return value.is(Token::Type::Number) && value.token().number().is_integer();
|
|
|
- };
|
|
|
- auto is_signed_integer = [](ComponentValue const& value) -> bool {
|
|
|
- return value.is(Token::Type::Number) && value.token().number().is_integer_with_explicit_sign();
|
|
|
- };
|
|
|
- auto is_signless_integer = [](ComponentValue const& value) -> bool {
|
|
|
- return value.is(Token::Type::Number) && !value.token().number().is_integer_with_explicit_sign();
|
|
|
- };
|
|
|
-
|
|
|
- // https://www.w3.org/TR/css-syntax-3/#the-anb-type
|
|
|
- // Unfortunately these can't be in the same order as in the spec.
|
|
|
-
|
|
|
- values.skip_whitespace();
|
|
|
- auto const& first_value = values.next_token();
|
|
|
-
|
|
|
- // odd | even
|
|
|
- if (first_value.is(Token::Type::Ident)) {
|
|
|
- auto ident = first_value.token().ident();
|
|
|
- if (ident.equals_ignoring_ascii_case("odd"sv)) {
|
|
|
- transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { 2, 1 };
|
|
|
- }
|
|
|
- if (ident.equals_ignoring_ascii_case("even"sv)) {
|
|
|
- transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { 2, 0 };
|
|
|
- }
|
|
|
- }
|
|
|
- // <integer>
|
|
|
- if (is_integer(first_value)) {
|
|
|
- int b = first_value.token().to_integer();
|
|
|
- transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { 0, b };
|
|
|
- }
|
|
|
- // <n-dimension>
|
|
|
- // <n-dimension> <signed-integer>
|
|
|
- // <n-dimension> ['+' | '-'] <signless-integer>
|
|
|
- if (is_n_dimension(first_value)) {
|
|
|
- int a = first_value.token().dimension_value_int();
|
|
|
- values.skip_whitespace();
|
|
|
-
|
|
|
- // <n-dimension> <signed-integer>
|
|
|
- if (is_signed_integer(values.peek_token())) {
|
|
|
- int b = values.next_token().token().to_integer();
|
|
|
- transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { a, b };
|
|
|
- }
|
|
|
-
|
|
|
- // <n-dimension> ['+' | '-'] <signless-integer>
|
|
|
- {
|
|
|
- auto child_transaction = transaction.create_child();
|
|
|
- auto const& second_value = values.next_token();
|
|
|
- values.skip_whitespace();
|
|
|
- auto const& third_value = values.next_token();
|
|
|
-
|
|
|
- if (is_sign(second_value) && is_signless_integer(third_value)) {
|
|
|
- int b = third_value.token().to_integer() * (second_value.is_delim('+') ? 1 : -1);
|
|
|
- child_transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { a, b };
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- // <n-dimension>
|
|
|
- transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { a, 0 };
|
|
|
- }
|
|
|
- // <ndash-dimension> <signless-integer>
|
|
|
- if (is_ndash_dimension(first_value)) {
|
|
|
- values.skip_whitespace();
|
|
|
- auto const& second_value = values.next_token();
|
|
|
- if (is_signless_integer(second_value)) {
|
|
|
- int a = first_value.token().dimension_value_int();
|
|
|
- int b = -second_value.token().to_integer();
|
|
|
- transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { a, b };
|
|
|
- }
|
|
|
-
|
|
|
- return syntax_error();
|
|
|
- }
|
|
|
- // <ndashdigit-dimension>
|
|
|
- if (is_ndashdigit_dimension(first_value)) {
|
|
|
- auto const& dimension = first_value.token();
|
|
|
- int a = dimension.dimension_value_int();
|
|
|
- auto maybe_b = dimension.dimension_unit().substring_view(1).to_int();
|
|
|
- if (maybe_b.has_value()) {
|
|
|
- transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { a, maybe_b.value() };
|
|
|
- }
|
|
|
-
|
|
|
- return syntax_error();
|
|
|
- }
|
|
|
- // <dashndashdigit-ident>
|
|
|
- if (is_dashndashdigit_ident(first_value)) {
|
|
|
- auto maybe_b = first_value.token().ident().substring_view(2).to_int();
|
|
|
- if (maybe_b.has_value()) {
|
|
|
- transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { -1, maybe_b.value() };
|
|
|
- }
|
|
|
-
|
|
|
- return syntax_error();
|
|
|
- }
|
|
|
- // -n
|
|
|
- // -n <signed-integer>
|
|
|
- // -n ['+' | '-'] <signless-integer>
|
|
|
- if (is_dashn(first_value)) {
|
|
|
- values.skip_whitespace();
|
|
|
-
|
|
|
- // -n <signed-integer>
|
|
|
- if (is_signed_integer(values.peek_token())) {
|
|
|
- int b = values.next_token().token().to_integer();
|
|
|
- transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { -1, b };
|
|
|
- }
|
|
|
-
|
|
|
- // -n ['+' | '-'] <signless-integer>
|
|
|
- {
|
|
|
- auto child_transaction = transaction.create_child();
|
|
|
- auto const& second_value = values.next_token();
|
|
|
- values.skip_whitespace();
|
|
|
- auto const& third_value = values.next_token();
|
|
|
-
|
|
|
- if (is_sign(second_value) && is_signless_integer(third_value)) {
|
|
|
- int b = third_value.token().to_integer() * (second_value.is_delim('+') ? 1 : -1);
|
|
|
- child_transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { -1, b };
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- // -n
|
|
|
- transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { -1, 0 };
|
|
|
- }
|
|
|
- // -n- <signless-integer>
|
|
|
- if (is_dashndash(first_value)) {
|
|
|
- values.skip_whitespace();
|
|
|
- auto const& second_value = values.next_token();
|
|
|
- if (is_signless_integer(second_value)) {
|
|
|
- int b = -second_value.token().to_integer();
|
|
|
- transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { -1, b };
|
|
|
- }
|
|
|
-
|
|
|
- return syntax_error();
|
|
|
- }
|
|
|
-
|
|
|
- // All that's left now are these:
|
|
|
- // '+'?† n
|
|
|
- // '+'?† n <signed-integer>
|
|
|
- // '+'?† n ['+' | '-'] <signless-integer>
|
|
|
- // '+'?† n- <signless-integer>
|
|
|
- // '+'?† <ndashdigit-ident>
|
|
|
- // In all of these cases, the + is optional, and has no effect.
|
|
|
- // So, we just skip the +, and carry on.
|
|
|
- if (!first_value.is_delim('+')) {
|
|
|
- values.reconsume_current_input_token();
|
|
|
- // We do *not* skip whitespace here.
|
|
|
- }
|
|
|
-
|
|
|
- auto const& first_after_plus = values.next_token();
|
|
|
- // '+'?† n
|
|
|
- // '+'?† n <signed-integer>
|
|
|
- // '+'?† n ['+' | '-'] <signless-integer>
|
|
|
- if (is_n(first_after_plus)) {
|
|
|
- values.skip_whitespace();
|
|
|
-
|
|
|
- // '+'?† n <signed-integer>
|
|
|
- if (is_signed_integer(values.peek_token())) {
|
|
|
- int b = values.next_token().token().to_integer();
|
|
|
- transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { 1, b };
|
|
|
- }
|
|
|
-
|
|
|
- // '+'?† n ['+' | '-'] <signless-integer>
|
|
|
- {
|
|
|
- auto child_transaction = transaction.create_child();
|
|
|
- auto const& second_value = values.next_token();
|
|
|
- values.skip_whitespace();
|
|
|
- auto const& third_value = values.next_token();
|
|
|
-
|
|
|
- if (is_sign(second_value) && is_signless_integer(third_value)) {
|
|
|
- int b = third_value.token().to_integer() * (second_value.is_delim('+') ? 1 : -1);
|
|
|
- child_transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { 1, b };
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- // '+'?† n
|
|
|
- transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { 1, 0 };
|
|
|
- }
|
|
|
-
|
|
|
- // '+'?† n- <signless-integer>
|
|
|
- if (is_ndash(first_after_plus)) {
|
|
|
- values.skip_whitespace();
|
|
|
- auto const& second_value = values.next_token();
|
|
|
- if (is_signless_integer(second_value)) {
|
|
|
- int b = -second_value.token().to_integer();
|
|
|
- transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { 1, b };
|
|
|
- }
|
|
|
-
|
|
|
- return syntax_error();
|
|
|
- }
|
|
|
-
|
|
|
- // '+'?† <ndashdigit-ident>
|
|
|
- if (is_ndashdigit_ident(first_after_plus)) {
|
|
|
- auto maybe_b = first_after_plus.token().ident().substring_view(1).to_int();
|
|
|
- if (maybe_b.has_value()) {
|
|
|
- transaction.commit();
|
|
|
- return Selector::SimpleSelector::ANPlusBPattern { 1, maybe_b.value() };
|
|
|
- }
|
|
|
-
|
|
|
- return syntax_error();
|
|
|
- }
|
|
|
-
|
|
|
- return syntax_error();
|
|
|
-}
|
|
|
-
|
|
|
class UnparsedCalculationNode final : public CalculationNode {
|
|
|
public:
|
|
|
static ErrorOr<NonnullOwnPtr<UnparsedCalculationNode>> create(ComponentValue component_value)
|
Sam Atkins