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https://github.com/RGBCube/serenity
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LibWeb: Make MediaCondition a top-level type and add factory methods
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parent
ae4f0000c8
commit
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4 changed files with 93 additions and 57 deletions
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@ -139,7 +139,52 @@ bool MediaFeature::evaluate(DOM::Window const& window) const
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VERIFY_NOT_REACHED();
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}
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String MediaQuery::MediaCondition::to_string() const
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NonnullOwnPtr<MediaCondition> MediaCondition::from_general_enclosed(GeneralEnclosed&& general_enclosed)
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{
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auto result = new MediaCondition;
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result->type = Type::GeneralEnclosed;
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result->general_enclosed = move(general_enclosed);
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return adopt_own(*result);
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}
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NonnullOwnPtr<MediaCondition> MediaCondition::from_feature(MediaFeature&& feature)
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{
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auto result = new MediaCondition;
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result->type = Type::Single;
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result->feature = move(feature);
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return adopt_own(*result);
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}
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NonnullOwnPtr<MediaCondition> MediaCondition::from_not(NonnullOwnPtr<MediaCondition>&& condition)
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{
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auto result = new MediaCondition;
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result->type = Type::Not;
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result->conditions.append(move(condition));
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return adopt_own(*result);
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}
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NonnullOwnPtr<MediaCondition> MediaCondition::from_and_list(NonnullOwnPtrVector<MediaCondition>&& conditions)
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{
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auto result = new MediaCondition;
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result->type = Type::And;
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result->conditions = move(conditions);
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return adopt_own(*result);
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}
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NonnullOwnPtr<MediaCondition> MediaCondition::from_or_list(NonnullOwnPtrVector<MediaCondition>&& conditions)
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{
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auto result = new MediaCondition;
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result->type = Type::Or;
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result->conditions = move(conditions);
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return adopt_own(*result);
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}
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String MediaCondition::to_string() const
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{
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StringBuilder builder;
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builder.append('(');
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@ -165,7 +210,7 @@ String MediaQuery::MediaCondition::to_string() const
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return builder.to_string();
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}
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MatchResult MediaQuery::MediaCondition::evaluate(DOM::Window const& window) const
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MatchResult MediaCondition::evaluate(DOM::Window const& window) const
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{
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switch (type) {
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case Type::Single:
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@ -112,6 +112,33 @@ private:
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Optional<MediaFeatureValue> m_value {};
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};
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// https://www.w3.org/TR/mediaqueries-4/#media-conditions
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struct MediaCondition {
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enum class Type {
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Single,
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And,
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Or,
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Not,
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GeneralEnclosed,
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};
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static NonnullOwnPtr<MediaCondition> from_general_enclosed(GeneralEnclosed&&);
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static NonnullOwnPtr<MediaCondition> from_feature(MediaFeature&&);
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static NonnullOwnPtr<MediaCondition> from_not(NonnullOwnPtr<MediaCondition>&&);
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static NonnullOwnPtr<MediaCondition> from_and_list(NonnullOwnPtrVector<MediaCondition>&&);
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static NonnullOwnPtr<MediaCondition> from_or_list(NonnullOwnPtrVector<MediaCondition>&&);
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MatchResult evaluate(DOM::Window const&) const;
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String to_string() const;
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private:
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MediaCondition() { }
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Type type;
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Optional<MediaFeature> feature;
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NonnullOwnPtrVector<MediaCondition> conditions;
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Optional<GeneralEnclosed> general_enclosed;
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};
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class MediaQuery : public RefCounted<MediaQuery> {
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friend class Parser;
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@ -135,25 +162,6 @@ public:
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Speech,
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};
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// https://www.w3.org/TR/mediaqueries-4/#media-conditions
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struct MediaCondition {
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enum class Type {
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Single,
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And,
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Or,
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Not,
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GeneralEnclosed,
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};
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Type type;
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Optional<MediaFeature> feature;
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NonnullOwnPtrVector<MediaCondition> conditions;
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Optional<GeneralEnclosed> general_enclosed;
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MatchResult evaluate(DOM::Window const&) const;
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String to_string() const;
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};
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static NonnullRefPtr<MediaQuery> create_not_all();
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static NonnullRefPtr<MediaQuery> create() { return adopt_ref(*new MediaQuery); }
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@ -188,8 +196,8 @@ struct Formatter<Web::CSS::MediaFeature> : Formatter<StringView> {
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};
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template<>
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struct Formatter<Web::CSS::MediaQuery::MediaCondition> : Formatter<StringView> {
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ErrorOr<void> format(FormatBuilder& builder, Web::CSS::MediaQuery::MediaCondition const& media_condition)
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struct Formatter<Web::CSS::MediaCondition> : Formatter<StringView> {
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ErrorOr<void> format(FormatBuilder& builder, Web::CSS::MediaCondition const& media_condition)
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{
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return Formatter<StringView>::format(builder, media_condition.to_string());
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}
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@ -749,7 +749,7 @@ NonnullRefPtr<MediaQuery> Parser::parse_media_query(TokenStream<StyleComponentVa
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return invalid_media_query();
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}
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OwnPtr<MediaQuery::MediaCondition> Parser::consume_media_condition(TokenStream<StyleComponentValueRule>& tokens)
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OwnPtr<MediaCondition> Parser::consume_media_condition(TokenStream<StyleComponentValueRule>& tokens)
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{
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// "not <media-condition>"
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// ( `<media-not>` in the grammar )
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@ -758,13 +758,8 @@ OwnPtr<MediaQuery::MediaCondition> Parser::consume_media_condition(TokenStream<S
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if (first_token.is(Token::Type::Ident) && first_token.token().ident().equals_ignoring_case("not"sv)) {
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tokens.next_token();
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auto condition = new MediaQuery::MediaCondition;
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condition->type = MediaQuery::MediaCondition::Type::Not;
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if (auto child_condition = consume_media_condition(tokens)) {
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condition->conditions.append(child_condition.release_nonnull());
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return adopt_own(*condition);
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}
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if (auto child_condition = consume_media_condition(tokens))
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return MediaCondition::from_not(child_condition.release_nonnull());
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tokens.rewind_to_position(position);
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return {};
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@ -772,16 +767,16 @@ OwnPtr<MediaQuery::MediaCondition> Parser::consume_media_condition(TokenStream<S
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// "<media-condition> ([and | or] <media-condition>)*"
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// ( `<media-in-parens> [ <media-and>* | <media-or>* ]` in the grammar )
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NonnullOwnPtrVector<MediaQuery::MediaCondition> child_conditions;
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Optional<MediaQuery::MediaCondition::Type> condition_type {};
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auto as_condition_type = [](auto& token) -> Optional<MediaQuery::MediaCondition::Type> {
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NonnullOwnPtrVector<MediaCondition> child_conditions;
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Optional<MediaCondition::Type> condition_type {};
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auto as_condition_type = [](auto& token) -> Optional<MediaCondition::Type> {
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if (!token.is(Token::Type::Ident))
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return {};
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auto ident = token.token().ident();
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if (ident.equals_ignoring_case("and"))
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return MediaQuery::MediaCondition::Type::And;
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return MediaCondition::Type::And;
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if (ident.equals_ignoring_case("or"))
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return MediaQuery::MediaCondition::Type::Or;
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return MediaCondition::Type::Or;
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return {};
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};
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@ -806,10 +801,7 @@ OwnPtr<MediaQuery::MediaCondition> Parser::consume_media_condition(TokenStream<S
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tokens.skip_whitespace();
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if (auto child_feature = consume_media_feature(tokens); child_feature.has_value()) {
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auto child = new MediaQuery::MediaCondition;
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child->type = MediaQuery::MediaCondition::Type::Single;
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child->feature = child_feature.value();
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child_conditions.append(adopt_own(*child));
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child_conditions.append(MediaCondition::from_feature(child_feature.release_value()));
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} else {
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auto& token = tokens.next_token();
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if (!token.is_block() || !token.block().is_paren()) {
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@ -832,29 +824,20 @@ OwnPtr<MediaQuery::MediaCondition> Parser::consume_media_condition(TokenStream<S
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if (child_conditions.size() == 1)
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return move(child_conditions.ptr_at(0));
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auto condition = new MediaQuery::MediaCondition;
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condition->type = condition_type.value();
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condition->conditions = move(child_conditions);
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return adopt_own(*condition);
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if (condition_type.value() == MediaCondition::Type::And)
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return MediaCondition::from_and_list(move(child_conditions));
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return MediaCondition::from_or_list(move(child_conditions));
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}
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// `<media-feature>`
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tokens.rewind_to_position(position);
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if (auto feature = consume_media_feature(tokens); feature.has_value()) {
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auto condition = new MediaQuery::MediaCondition;
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condition->type = MediaQuery::MediaCondition::Type::Single;
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condition->feature = feature.value();
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return adopt_own(*condition);
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}
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if (auto feature = consume_media_feature(tokens); feature.has_value())
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return MediaCondition::from_feature(feature.release_value());
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// `<general-enclosed>`
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tokens.rewind_to_position(position);
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if (auto general_enclosed = parse_general_enclosed(tokens); general_enclosed.has_value()) {
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auto condition = new MediaQuery::MediaCondition;
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condition->type = MediaQuery::MediaCondition::Type::GeneralEnclosed;
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condition->general_enclosed = general_enclosed.release_value();
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return adopt_own(*condition);
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}
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if (auto general_enclosed = parse_general_enclosed(tokens); general_enclosed.has_value())
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return MediaCondition::from_general_enclosed(general_enclosed.release_value());
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tokens.rewind_to_position(position);
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return {};
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@ -235,7 +235,7 @@ private:
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Result<Selector::SimpleSelector, ParsingResult> parse_simple_selector(TokenStream<StyleComponentValueRule>&);
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NonnullRefPtr<MediaQuery> parse_media_query(TokenStream<StyleComponentValueRule>&);
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OwnPtr<MediaQuery::MediaCondition> consume_media_condition(TokenStream<StyleComponentValueRule>&);
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OwnPtr<MediaCondition> consume_media_condition(TokenStream<StyleComponentValueRule>&);
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Optional<MediaFeature> consume_media_feature(TokenStream<StyleComponentValueRule>&);
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Optional<MediaQuery::MediaType> consume_media_type(TokenStream<StyleComponentValueRule>&);
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Optional<MediaFeatureValue> parse_media_feature_value(TokenStream<StyleComponentValueRule>&);
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