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https://github.com/RGBCube/serenity
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LibWeb: Add 'Attribute' as a CSS SimpleSelector::Type
Previously, SimpleSelectors optionally had Attribute-selector data as well as their main type. Now, they're either one or the other, which better matches the spec, and makes parsing and matching more straightforward.
This commit is contained in:
Sam Atkins
Andreas Kling
parent
dadcb46344
commit
96b2356cbb
5 changed files with 136 additions and 139 deletions
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@ -424,29 +424,31 @@ public:
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if (!peek() || peek() == '{' || peek() == ',' || is_combinator(peek()))
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return {};
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CSS::Selector::SimpleSelector::Type type;
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CSS::Selector::SimpleSelector simple_selector;
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if (peek() == '*') {
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type = CSS::Selector::SimpleSelector::Type::Universal;
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simple_selector.type = CSS::Selector::SimpleSelector::Type::Universal;
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consume_one();
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CSS::Selector::SimpleSelector result;
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result.type = type;
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return result;
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return simple_selector;
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}
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if (peek() == '.') {
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type = CSS::Selector::SimpleSelector::Type::Class;
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simple_selector.type = CSS::Selector::SimpleSelector::Type::Class;
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consume_one();
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} else if (peek() == '#') {
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type = CSS::Selector::SimpleSelector::Type::Id;
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simple_selector.type = CSS::Selector::SimpleSelector::Type::Id;
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consume_one();
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} else if (isalpha(peek())) {
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type = CSS::Selector::SimpleSelector::Type::TagName;
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simple_selector.type = CSS::Selector::SimpleSelector::Type::TagName;
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} else if (peek() == '[') {
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simple_selector.type = CSS::Selector::SimpleSelector::Type::Attribute;
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} else {
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type = CSS::Selector::SimpleSelector::Type::Universal;
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simple_selector.type = CSS::Selector::SimpleSelector::Type::Universal;
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}
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if (type != CSS::Selector::SimpleSelector::Type::Universal) {
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if ((simple_selector.type != CSS::Selector::SimpleSelector::Type::Universal)
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&& (simple_selector.type != CSS::Selector::SimpleSelector::Type::Attribute)) {
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while (is_valid_selector_char(peek()))
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buffer.append(consume_one());
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PARSE_VERIFY(!buffer.is_empty());
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@ -454,18 +456,16 @@ public:
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auto value = String::copy(buffer);
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if (type == CSS::Selector::SimpleSelector::Type::TagName) {
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if (simple_selector.type == CSS::Selector::SimpleSelector::Type::TagName) {
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// Some stylesheets use uppercase tag names, so here's a hack to just lowercase them internally.
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value = value.to_lowercase();
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}
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CSS::Selector::SimpleSelector simple_selector;
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simple_selector.type = type;
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simple_selector.value = value;
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buffer.clear();
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if (peek() == '[') {
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CSS::Selector::SimpleSelector::AttributeMatchType attribute_match_type = CSS::Selector::SimpleSelector::AttributeMatchType::HasAttribute;
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if (simple_selector.type == CSS::Selector::SimpleSelector::Type::Attribute) {
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CSS::Selector::SimpleSelector::Attribute::MatchType attribute_match_type = CSS::Selector::SimpleSelector::Attribute::MatchType::HasAttribute;
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String attribute_name;
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String attribute_value;
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bool in_value = false;
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@ -475,10 +475,10 @@ public:
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char ch = consume_one();
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if (ch == '=' || (ch == '~' && peek() == '=')) {
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if (ch == '=') {
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attribute_match_type = CSS::Selector::SimpleSelector::AttributeMatchType::ExactValueMatch;
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attribute_match_type = CSS::Selector::SimpleSelector::Attribute::MatchType::ExactValueMatch;
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} else if (ch == '~') {
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consume_one();
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attribute_match_type = CSS::Selector::SimpleSelector::AttributeMatchType::ContainsWord;
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attribute_match_type = CSS::Selector::SimpleSelector::Attribute::MatchType::ContainsWord;
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}
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attribute_name = String::copy(buffer);
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buffer.clear();
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@ -503,9 +503,9 @@ public:
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else
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attribute_name = String::copy(buffer);
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buffer.clear();
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simple_selector.attribute_match_type = attribute_match_type;
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simple_selector.attribute_name = attribute_name;
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simple_selector.attribute_value = attribute_value;
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simple_selector.attribute.match_type = attribute_match_type;
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simple_selector.attribute.name = attribute_name;
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simple_selector.attribute.value = attribute_value;
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if (expected_end_of_attribute_selector != ']') {
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if (!consume_specific(expected_end_of_attribute_selector))
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return {};
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@ -243,26 +243,18 @@ Optional<Selector> Parser::parse_single_selector(TokenStream<T>& tokens, bool is
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if (check_for_eof_or_whitespace(current_value))
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return {};
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Selector::SimpleSelector::Type type;
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String value;
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Selector::SimpleSelector simple_selector;
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// FIXME: Handle namespace prefixes.
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if (current_value.is(Token::Type::Delim) && ((Token)current_value).delim() == "*") {
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// FIXME: Handle selectors like `*.foo`.
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type = Selector::SimpleSelector::Type::Universal;
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Selector::SimpleSelector result;
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result.type = type;
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return result;
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}
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if (current_value.is(Token::Type::Hash)) {
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simple_selector.type = Selector::SimpleSelector::Type::Universal;
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} else if (current_value.is(Token::Type::Hash)) {
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if (((Token)current_value).m_hash_type != Token::HashType::Id) {
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dbgln("Selector contains hash token that is not an id: {}", current_value.to_debug_string());
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return {};
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}
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type = Selector::SimpleSelector::Type::Id;
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value = ((Token)current_value).m_value.to_string();
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simple_selector.type = Selector::SimpleSelector::Type::Id;
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simple_selector.value = ((Token)current_value).m_value.to_string();
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} else if (current_value.is(Token::Type::Delim) && ((Token)current_value).delim() == ".") {
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current_value = tokens.next_token();
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if (check_for_eof_or_whitespace(current_value))
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@ -273,33 +265,19 @@ Optional<Selector> Parser::parse_single_selector(TokenStream<T>& tokens, bool is
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return {};
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}
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type = Selector::SimpleSelector::Type::Class;
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value = current_value.token().ident().to_lowercase_string();
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} else if (current_value.is(Token::Type::Delim) && current_value.token().delim() == "*") {
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type = Selector::SimpleSelector::Type::Universal;
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simple_selector.type = Selector::SimpleSelector::Type::Class;
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simple_selector.value = current_value.token().ident().to_lowercase_string();
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} else if (current_value.is(Token::Type::Ident)) {
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type = Selector::SimpleSelector::Type::TagName;
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value = current_value.token().ident().to_lowercase_string();
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} else if ((current_value.is(Token::Type::Delim) && current_value.token().delim() == ":")
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|| (current_value.is_block() && current_value.block().is_square())) {
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simple_selector.type = Selector::SimpleSelector::Type::TagName;
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simple_selector.value = current_value.token().ident().to_lowercase_string();
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} else if ((current_value.is(Token::Type::Delim) && current_value.token().delim() == ":")) {
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// FIXME: This is a temporary hack until we make the Selector::SimpleSelector::Type changes.
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type = Selector::SimpleSelector::Type::Universal;
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simple_selector.type = Selector::SimpleSelector::Type::Universal;
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tokens.reconsume_current_input_token();
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} else {
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dbgln("Invalid simple selector!");
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return {};
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}
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} else if (current_value.is_block() && current_value.block().is_square()) {
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simple_selector.type = Selector::SimpleSelector::Type::Attribute;
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Selector::SimpleSelector simple_selector;
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simple_selector.type = type;
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simple_selector.value = value;
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current_value = tokens.next_token();
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if (check_for_eof_or_whitespace(current_value))
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return simple_selector;
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// FIXME: Attribute selectors want to be their own Selector::SimpleSelector::Type according to the spec.
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if (current_value.is_block() && current_value.block().is_square()) {
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auto& attribute = simple_selector.attribute;
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Vector<StyleComponentValueRule> const& attribute_parts = current_value.block().values();
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@ -315,8 +293,8 @@ Optional<Selector> Parser::parse_single_selector(TokenStream<T>& tokens, bool is
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return {};
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}
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simple_selector.attribute_match_type = Selector::SimpleSelector::AttributeMatchType::HasAttribute;
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simple_selector.attribute_name = attribute_part.token().ident();
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attribute.match_type = Selector::SimpleSelector::Attribute::MatchType::HasAttribute;
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attribute.name = attribute_part.token().ident();
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if (attribute_parts.size() == 1)
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return simple_selector;
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@ -329,7 +307,7 @@ Optional<Selector> Parser::parse_single_selector(TokenStream<T>& tokens, bool is
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}
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if (delim_part.token().delim() == "=") {
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simple_selector.attribute_match_type = Selector::SimpleSelector::AttributeMatchType::ExactValueMatch;
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attribute.match_type = Selector::SimpleSelector::Attribute::MatchType::ExactValueMatch;
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attribute_index++;
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} else {
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attribute_index++;
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@ -345,19 +323,19 @@ Optional<Selector> Parser::parse_single_selector(TokenStream<T>& tokens, bool is
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}
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if (delim_part.token().delim() == "~") {
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simple_selector.attribute_match_type = Selector::SimpleSelector::AttributeMatchType::ContainsWord;
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attribute.match_type = Selector::SimpleSelector::Attribute::MatchType::ContainsWord;
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attribute_index++;
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} else if (delim_part.token().delim() == "*") {
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simple_selector.attribute_match_type = Selector::SimpleSelector::AttributeMatchType::ContainsString;
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attribute.match_type = Selector::SimpleSelector::Attribute::MatchType::ContainsString;
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attribute_index++;
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} else if (delim_part.token().delim() == "|") {
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simple_selector.attribute_match_type = Selector::SimpleSelector::AttributeMatchType::StartsWithSegment;
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attribute.match_type = Selector::SimpleSelector::Attribute::MatchType::StartsWithSegment;
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attribute_index++;
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} else if (delim_part.token().delim() == "^") {
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simple_selector.attribute_match_type = Selector::SimpleSelector::AttributeMatchType::StartsWithString;
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attribute.match_type = Selector::SimpleSelector::Attribute::MatchType::StartsWithString;
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attribute_index++;
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} else if (delim_part.token().delim() == "$") {
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simple_selector.attribute_match_type = Selector::SimpleSelector::AttributeMatchType::EndsWithString;
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attribute.match_type = Selector::SimpleSelector::Attribute::MatchType::EndsWithString;
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attribute_index++;
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}
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}
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@ -372,12 +350,18 @@ Optional<Selector> Parser::parse_single_selector(TokenStream<T>& tokens, bool is
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dbgln("Expected a string or ident for the value to match attribute against, got: '{}'", value_part.to_debug_string());
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return {};
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}
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simple_selector.attribute_value = value_part.token().is(Token::Type::Ident) ? value_part.token().ident() : value_part.token().string();
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attribute.value = value_part.token().is(Token::Type::Ident) ? value_part.token().ident() : value_part.token().string();
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// FIXME: Handle case-sensitivity suffixes. https://www.w3.org/TR/selectors-4/#attribute-case
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return simple_selector;
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} else {
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dbgln("Invalid simple selector!");
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return {};
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}
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current_value = tokens.next_token();
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if (check_for_eof_or_whitespace(current_value))
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return simple_selector;
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// FIXME: Pseudo-class selectors want to be their own Selector::SimpleSelector::Type according to the spec.
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if (current_value.is(Token::Type::Colon)) {
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bool is_pseudo = false;
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