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https://github.com/LadybirdBrowser/ladybird.git
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LibWeb/CSS: Promote <transform-list/function> to parsable types
The `transform` property is now parsed based on its JSON data, and shouldn't behave any differently than before. This makes `<transform-list>` and `<transform-function>` work in the `syntax` descriptor for `@property`, and also means we know that `transform` can accept the `none` keyword. We get a few WPT passes out of that.
This commit is contained in:
Sam Atkins
parent
65ba5acf9d
commit
35fd3bda79
Notes:
github-actions[bot]
2025-10-14 12:43:05 +00:00
Author: https://github.com/AtkinsSJ
Commit: 35fd3bda79
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/6466
8 changed files with 170 additions and 136 deletions
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@ -484,7 +484,8 @@ private:
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RefPtr<StyleValue const> parse_rotate_value(TokenStream<ComponentValue>&);
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RefPtr<StyleValue const> parse_stroke_dasharray_value(TokenStream<ComponentValue>&);
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RefPtr<StyleValue const> parse_easing_value(TokenStream<ComponentValue>&);
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RefPtr<StyleValue const> parse_transform_value(TokenStream<ComponentValue>&);
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RefPtr<StyleValue const> parse_transform_function_value(TokenStream<ComponentValue>&);
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RefPtr<StyleValue const> parse_transform_list_value(TokenStream<ComponentValue>&);
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RefPtr<StyleValue const> parse_transform_origin_value(TokenStream<ComponentValue>&);
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RefPtr<StyleValue const> parse_transition_value(TokenStream<ComponentValue>&);
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RefPtr<StyleValue const> parse_transition_property_value(TokenStream<ComponentValue>&);
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@ -178,6 +178,10 @@ Optional<Parser::PropertyAndValue> Parser::parse_css_value_for_properties(Readon
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return parsed.release_value();
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if (auto parsed = parse_for_type(ValueType::String); parsed.has_value())
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return parsed.release_value();
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if (auto parsed = parse_for_type(ValueType::TransformFunction); parsed.has_value())
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return parsed.release_value();
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if (auto parsed = parse_for_type(ValueType::TransformList); parsed.has_value())
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return parsed.release_value();
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if (auto parsed = parse_for_type(ValueType::Url); parsed.has_value())
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return parsed.release_value();
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@ -802,10 +806,6 @@ Parser::ParseErrorOr<NonnullRefPtr<StyleValue const>> Parser::parse_css_value(Pr
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if (auto parsed_value = parse_touch_action_value(tokens); parsed_value && !tokens.has_next_token())
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return parsed_value.release_nonnull();
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return ParseError::SyntaxError;
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case PropertyID::Transform:
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if (auto parsed_value = parse_transform_value(tokens); parsed_value && !tokens.has_next_token())
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return parsed_value.release_nonnull();
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return ParseError::SyntaxError;
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case PropertyID::TransformOrigin:
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if (auto parsed_value = parse_transform_origin_value(tokens); parsed_value && !tokens.has_next_token())
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return parsed_value.release_nonnull();
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@ -4913,119 +4913,6 @@ RefPtr<StyleValue const> Parser::parse_touch_action_value(TokenStream<ComponentV
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return StyleValueList::create(move(parsed_values), StyleValueList::Separator::Space);
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}
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// https://www.w3.org/TR/css-transforms-1/#transform-property
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RefPtr<StyleValue const> Parser::parse_transform_value(TokenStream<ComponentValue>& tokens)
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{
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// <transform> = none | <transform-list>
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// <transform-list> = <transform-function>+
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if (auto none = parse_all_as_single_keyword_value(tokens, Keyword::None))
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return none;
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StyleValueVector transformations;
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auto transaction = tokens.begin_transaction();
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while (tokens.has_next_token()) {
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auto const& part = tokens.consume_a_token();
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if (!part.is_function())
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return nullptr;
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auto maybe_function = transform_function_from_string(part.function().name);
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if (!maybe_function.has_value())
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return nullptr;
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auto context_guard = push_temporary_value_parsing_context(FunctionContext { part.function().name });
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auto function = maybe_function.release_value();
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auto function_metadata = transform_function_metadata(function);
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auto function_tokens = TokenStream { part.function().value };
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auto arguments = parse_a_comma_separated_list_of_component_values(function_tokens);
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if (arguments.size() > function_metadata.parameters.size()) {
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ErrorReporter::the().report(InvalidValueError {
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.value_type = "<transform-function>"_fly_string,
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.value_string = part.function().original_source_text(),
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.description = MUST(String::formatted("Too many arguments to {}. max: {}", part.function().name, function_metadata.parameters.size())),
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});
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return nullptr;
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}
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if (arguments.size() < function_metadata.parameters.size() && function_metadata.parameters[arguments.size()].required) {
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ErrorReporter::the().report(InvalidValueError {
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.value_type = "<transform-function>"_fly_string,
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.value_string = part.function().original_source_text(),
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.description = MUST(String::formatted("Required parameter at position {} is missing", arguments.size())),
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});
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return nullptr;
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}
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StyleValueVector values;
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for (auto argument_index = 0u; argument_index < arguments.size(); ++argument_index) {
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TokenStream argument_tokens { arguments[argument_index] };
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argument_tokens.discard_whitespace();
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switch (function_metadata.parameters[argument_index].type) {
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case TransformFunctionParameterType::Angle: {
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// These are `<angle> | <zero>` in the spec, so we have to check for both kinds.
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if (auto angle_value = parse_angle_value(argument_tokens)) {
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values.append(angle_value.release_nonnull());
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break;
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}
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if (argument_tokens.next_token().is(Token::Type::Number) && argument_tokens.next_token().token().number_value() == 0) {
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argument_tokens.discard_a_token(); // 0
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values.append(AngleStyleValue::create(Angle::make_degrees(0)));
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break;
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}
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return nullptr;
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}
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case TransformFunctionParameterType::Length:
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case TransformFunctionParameterType::LengthNone: {
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if (auto length_value = parse_length_value(argument_tokens)) {
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values.append(length_value.release_nonnull());
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break;
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}
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if (function_metadata.parameters[argument_index].type == TransformFunctionParameterType::LengthNone
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&& argument_tokens.next_token().is_ident("none"sv)) {
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argument_tokens.discard_a_token(); // none
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values.append(KeywordStyleValue::create(Keyword::None));
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break;
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}
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return nullptr;
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}
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case TransformFunctionParameterType::LengthPercentage: {
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if (auto length_percentage_value = parse_length_percentage_value(argument_tokens)) {
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values.append(length_percentage_value.release_nonnull());
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break;
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}
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return nullptr;
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}
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case TransformFunctionParameterType::Number: {
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if (auto number_value = parse_number_value(argument_tokens)) {
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values.append(number_value.release_nonnull());
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break;
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}
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return nullptr;
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}
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case TransformFunctionParameterType::NumberPercentage: {
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if (auto number_percentage_value = parse_number_percentage_value(argument_tokens)) {
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values.append(number_percentage_value.release_nonnull());
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break;
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}
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return nullptr;
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}
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}
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argument_tokens.discard_whitespace();
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if (argument_tokens.has_next_token())
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return nullptr;
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}
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transformations.append(TransformationStyleValue::create(PropertyID::Transform, function, move(values)));
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}
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transaction.commit();
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return StyleValueList::create(move(transformations), StyleValueList::Separator::Space);
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}
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// https://www.w3.org/TR/css-transforms-1/#propdef-transform-origin
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RefPtr<StyleValue const> Parser::parse_transform_origin_value(TokenStream<ComponentValue>& tokens)
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{
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@ -67,6 +67,7 @@
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#include <LibWeb/CSS/StyleValues/StyleValueList.h>
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#include <LibWeb/CSS/StyleValues/SuperellipseStyleValue.h>
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#include <LibWeb/CSS/StyleValues/TimeStyleValue.h>
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#include <LibWeb/CSS/StyleValues/TransformationStyleValue.h>
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#include <LibWeb/CSS/StyleValues/URLStyleValue.h>
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#include <LibWeb/CSS/StyleValues/UnicodeRangeStyleValue.h>
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#include <LibWeb/CSS/StyleValues/UnresolvedStyleValue.h>
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@ -4700,6 +4701,131 @@ NonnullRefPtr<StyleValue const> Parser::resolve_unresolved_style_value(DOM::Abst
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return parsed_value.release_value();
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}
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// https://drafts.csswg.org/css-transforms-1/#typedef-transform-function
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RefPtr<StyleValue const> Parser::parse_transform_function_value(TokenStream<ComponentValue>& tokens)
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{
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auto transaction = tokens.begin_transaction();
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tokens.discard_whitespace();
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auto const& part = tokens.consume_a_token();
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if (!part.is_function())
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return nullptr;
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auto maybe_function = transform_function_from_string(part.function().name);
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if (!maybe_function.has_value())
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return nullptr;
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auto context_guard = push_temporary_value_parsing_context(FunctionContext { part.function().name });
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auto function = maybe_function.release_value();
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auto function_metadata = transform_function_metadata(function);
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auto function_tokens = TokenStream { part.function().value };
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auto arguments = parse_a_comma_separated_list_of_component_values(function_tokens);
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if (arguments.size() > function_metadata.parameters.size()) {
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ErrorReporter::the().report(InvalidValueError {
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.value_type = "<transform-function>"_fly_string,
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.value_string = part.function().original_source_text(),
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.description = MUST(String::formatted("Too many arguments to {}. max: {}", part.function().name, function_metadata.parameters.size())),
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});
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return nullptr;
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}
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if (arguments.size() < function_metadata.parameters.size() && function_metadata.parameters[arguments.size()].required) {
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ErrorReporter::the().report(InvalidValueError {
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.value_type = "<transform-function>"_fly_string,
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.value_string = part.function().original_source_text(),
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.description = MUST(String::formatted("Required parameter at position {} is missing", arguments.size())),
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});
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return nullptr;
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}
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StyleValueVector values;
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for (auto argument_index = 0u; argument_index < arguments.size(); ++argument_index) {
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TokenStream argument_tokens { arguments[argument_index] };
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argument_tokens.discard_whitespace();
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switch (function_metadata.parameters[argument_index].type) {
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case TransformFunctionParameterType::Angle: {
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// These are `<angle> | <zero>` in the spec, so we have to check for both kinds.
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if (auto angle_value = parse_angle_value(argument_tokens)) {
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values.append(angle_value.release_nonnull());
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break;
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}
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if (argument_tokens.next_token().is(Token::Type::Number) && argument_tokens.next_token().token().number_value() == 0) {
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argument_tokens.discard_a_token(); // 0
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values.append(AngleStyleValue::create(Angle::make_degrees(0)));
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break;
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}
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return nullptr;
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}
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case TransformFunctionParameterType::Length:
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case TransformFunctionParameterType::LengthNone: {
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if (auto length_value = parse_length_value(argument_tokens)) {
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values.append(length_value.release_nonnull());
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break;
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}
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if (function_metadata.parameters[argument_index].type == TransformFunctionParameterType::LengthNone
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&& argument_tokens.next_token().is_ident("none"sv)) {
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argument_tokens.discard_a_token(); // none
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values.append(KeywordStyleValue::create(Keyword::None));
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break;
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}
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return nullptr;
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}
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case TransformFunctionParameterType::LengthPercentage: {
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if (auto length_percentage_value = parse_length_percentage_value(argument_tokens)) {
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values.append(length_percentage_value.release_nonnull());
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break;
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}
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return nullptr;
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}
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case TransformFunctionParameterType::Number: {
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if (auto number_value = parse_number_value(argument_tokens)) {
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values.append(number_value.release_nonnull());
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break;
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}
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return nullptr;
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}
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case TransformFunctionParameterType::NumberPercentage: {
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if (auto number_percentage_value = parse_number_percentage_value(argument_tokens)) {
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values.append(number_percentage_value.release_nonnull());
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break;
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}
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return nullptr;
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}
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}
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argument_tokens.discard_whitespace();
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if (argument_tokens.has_next_token())
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return nullptr;
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}
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transaction.commit();
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return TransformationStyleValue::create(PropertyID::Transform, function, move(values));
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}
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// https://drafts.csswg.org/css-transforms-1/#typedef-transform-list
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RefPtr<StyleValue const> Parser::parse_transform_list_value(TokenStream<ComponentValue>& tokens)
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{
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// <transform-list> = <transform-function>+
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// https://www.w3.org/TR/css-transforms-1/#transform-property
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StyleValueVector transformations;
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auto transaction = tokens.begin_transaction();
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while (tokens.has_next_token()) {
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if (auto maybe_function = parse_transform_function_value(tokens)) {
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transformations.append(maybe_function.release_nonnull());
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tokens.discard_whitespace();
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continue;
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}
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break;
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}
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if (transformations.is_empty())
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return {};
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transaction.commit();
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return StyleValueList::create(move(transformations), StyleValueList::Separator::Space);
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}
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RefPtr<StyleValue const> Parser::parse_value(ValueType value_type, TokenStream<ComponentValue>& tokens)
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{
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switch (value_type) {
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@ -4758,6 +4884,10 @@ RefPtr<StyleValue const> Parser::parse_value(ValueType value_type, TokenStream<C
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return parse_string_value(tokens);
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case ValueType::Time:
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return parse_time_value(tokens);
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case ValueType::TransformFunction:
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return parse_transform_function_value(tokens);
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case ValueType::TransformList:
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return parse_transform_list_value(tokens);
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case ValueType::Url:
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return parse_url_value(tokens);
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}
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@ -3783,7 +3783,13 @@
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"affects-layout": false,
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"affects-stacking-context": true,
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"percentages-resolve-to": "length",
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"multiplicity": "list"
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"multiplicity": "list",
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"valid-types": [
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"transform-list"
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],
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"valid-identifiers": [
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"none"
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]
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},
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"transform-box": {
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"animation-type": "discrete",
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@ -61,6 +61,10 @@ Optional<ValueType> value_type_from_string(StringView string)
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return ValueType::String;
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if (string.equals_ignoring_ascii_case("time"sv))
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return ValueType::Time;
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if (string.equals_ignoring_ascii_case("transform-function"sv))
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return ValueType::TransformFunction;
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if (string.equals_ignoring_ascii_case("transform-list"sv))
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return ValueType::TransformList;
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if (string.equals_ignoring_ascii_case("url"sv))
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return ValueType::Url;
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return {};
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@ -123,6 +127,10 @@ StringView value_type_to_string(ValueType value_type)
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return "String"sv;
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case Web::CSS::ValueType::Time:
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return "Time"sv;
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case Web::CSS::ValueType::TransformFunction:
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return "TransformFunction"sv;
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case Web::CSS::ValueType::TransformList:
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return "TransformList"sv;
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case Web::CSS::ValueType::Url:
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return "Url"sv;
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}
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@ -40,6 +40,8 @@ enum class ValueType : u8 {
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Resolution,
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String,
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Time,
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TransformFunction,
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TransformList,
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Url,
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};
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@ -2,8 +2,8 @@ Harness status: OK
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Found 239 tests
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177 Pass
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62 Fail
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189 Pass
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50 Fail
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Pass syntax:'*', initialValue:'a' is valid
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Pass syntax:' * ', initialValue:'b' is valid
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Pass syntax:'<length>', initialValue:'2px' is valid
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@ -53,12 +53,12 @@ Pass syntax:'<time>', initialValue:'2s' is valid
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Pass syntax:'<time>', initialValue:'calc(2s - 9ms)' is valid
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Pass syntax:'<resolution>', initialValue:'10dpi' is valid
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Pass syntax:'<resolution>', initialValue:'3dPpX' is valid
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Fail syntax:'<transform-function>', initialValue:'translateX(2px)' is valid
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Pass syntax:'<transform-function>', initialValue:'translateX(2px)' is valid
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Pass syntax:'<transform-function>|<integer>', initialValue:'5' is valid
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Fail syntax:'<transform-function>|<integer>', initialValue:'scale(2)' is valid
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Fail syntax:'<transform-function>+', initialValue:'translateX(2px) rotate(42deg)' is valid
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Fail syntax:'<transform-list>', initialValue:'scale(2)' is valid
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Fail syntax:'<transform-list>', initialValue:'translateX(2px) rotate(20deg)' is valid
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Pass syntax:'<transform-function>|<integer>', initialValue:'scale(2)' is valid
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Pass syntax:'<transform-function>+', initialValue:'translateX(2px) rotate(42deg)' is valid
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Pass syntax:'<transform-list>', initialValue:'scale(2)' is valid
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Pass syntax:'<transform-list>', initialValue:'translateX(2px) rotate(20deg)' is valid
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Pass syntax:'<string>', initialValue:''foo bar'' is valid
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Fail syntax:'<string>', initialValue:' 'foo bar' ' is valid
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Pass syntax:'<string>', initialValue:''foo bar' is valid
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@ -94,15 +94,15 @@ Pass syntax:'yellow', initialValue:'yellow' is valid
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Fail syntax:'yellow | <color>+', initialValue:'yellow blue' is valid
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Pass syntax:'<color># | yellow', initialValue:'yellow, blue' is valid
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Fail syntax:'yellow | <color>#', initialValue:'yellow, blue' is valid
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Fail syntax:'<transform-list> | <transform-function> ', initialValue:'scale(2) rotate(90deg)' is valid
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Pass syntax:'<transform-list> | <transform-function> ', initialValue:'scale(2) rotate(90deg)' is valid
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Fail syntax:'<transform-function> | <transform-list>', initialValue:'scale(2) rotate(90deg)' is valid
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Fail syntax:'<transform-list> | <transform-function>+ ', initialValue:'scale(2) rotate(90deg)' is valid
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Fail syntax:'<transform-function>+ | <transform-list>', initialValue:'scale(2) rotate(90deg)' is valid
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Fail syntax:'<transform-list> | <transform-function># ', initialValue:'scale(2) rotate(90deg)' is valid
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Fail syntax:'<transform-function># | <transform-list>', initialValue:'scale(2) rotate(90deg)' is valid
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Pass syntax:'<transform-list> | <transform-function>+ ', initialValue:'scale(2) rotate(90deg)' is valid
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Pass syntax:'<transform-function>+ | <transform-list>', initialValue:'scale(2) rotate(90deg)' is valid
|
||||
Pass syntax:'<transform-list> | <transform-function># ', initialValue:'scale(2) rotate(90deg)' is valid
|
||||
Pass syntax:'<transform-function># | <transform-list>', initialValue:'scale(2) rotate(90deg)' is valid
|
||||
Fail syntax:'<transform-list> | <transform-function># ', initialValue:'scale(2), rotate(90deg)' is valid
|
||||
Fail syntax:'<transform-function># | <transform-list>', initialValue:'scale(2), rotate(90deg)' is valid
|
||||
Fail syntax:'<transform-list>', initialValue:'scale(2) rotate(90deg) ' is valid
|
||||
Pass syntax:'<transform-function># | <transform-list>', initialValue:'scale(2), rotate(90deg)' is valid
|
||||
Pass syntax:'<transform-list>', initialValue:'scale(2) rotate(90deg) ' is valid
|
||||
Pass syntax:'<integer>+ | <percentage>+ | <length>+ ', initialValue:'1' is valid
|
||||
Pass syntax:'<integer>+ | <percentage>+ | <length>+ ', initialValue:'1 1' is valid
|
||||
Pass syntax:'<integer>+ | <percentage>+ | <length>+ ', initialValue:'1%' is valid
|
||||
|
|
|
|||
|
|
@ -2,14 +2,14 @@ Harness status: OK
|
|||
|
||||
Found 33 tests
|
||||
|
||||
27 Pass
|
||||
6 Fail
|
||||
28 Pass
|
||||
5 Fail
|
||||
Pass Can set 'transform' to CSS-wide keywords: initial
|
||||
Pass Can set 'transform' to CSS-wide keywords: inherit
|
||||
Pass Can set 'transform' to CSS-wide keywords: unset
|
||||
Pass Can set 'transform' to CSS-wide keywords: revert
|
||||
Fail Can set 'transform' to var() references: var(--A)
|
||||
Fail Can set 'transform' to the 'none' keyword: none
|
||||
Pass Can set 'transform' to the 'none' keyword: none
|
||||
Fail Can set 'transform' to a transform: translate(50%, 50%)
|
||||
Fail Can set 'transform' to a transform: perspective(10em)
|
||||
Fail Can set 'transform' to a transform: translate3d(0px, 1px, 2px) translate(0px, 1px) rotate3d(1, 2, 3, 45deg) rotate(45deg) scale3d(1, 2, 3) scale(1, 2) skew(1deg, 1deg) skewX(1deg) skewY(45deg) perspective(1px) matrix3d(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16) matrix(1, 2, 3, 4, 5, 6)
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue