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ladybird/Libraries/LibWeb/CSS/Parser/Parser.h
Sam Atkins 6969d1eba3 LibWeb/CSS: Parse calc() as intermediate types instead of UnparsedCN 
Previously we created a tree of CalculationNodes with dummy
UnparsedCalculationNode children, and then swapped those with the real
children. This matched the spec closely but had the unfortunate
downside that CalculationNodes couldn't be immutable, and couldn't know
their properties at construct-time. UnparsedCalculationNode is also a
footgun, as if it gets left in the tree accidentally we would VERIFY().

So instead, let's parse the calc() tree into an intermediate format, and
then convert each node in that tree, depth-first, into its
corresponding CalculationNode. This means each CalculationNode knows
what its children are when it is constructed, and they never change.

Apart from deleting UnparsedCalculationNode, we can also get rid of the
for_each_child_node() method that was only used by this "replace the
children" code.
2024-12-18 12:21:22 +00:00

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/*
* Copyright (c) 2020-2021, the SerenityOS developers.
* Copyright (c) 2021-2024, Sam Atkins <sam@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Error.h>
#include <AK/NonnullRawPtr.h>
#include <AK/RefPtr.h>
#include <AK/Vector.h>
#include <LibGfx/Font/UnicodeRange.h>
#include <LibWeb/CSS/CSSStyleDeclaration.h>
#include <LibWeb/CSS/CSSStyleValue.h>
#include <LibWeb/CSS/GeneralEnclosed.h>
#include <LibWeb/CSS/MediaQuery.h>
#include <LibWeb/CSS/ParsedFontFace.h>
#include <LibWeb/CSS/Parser/ComponentValue.h>
#include <LibWeb/CSS/Parser/Dimension.h>
#include <LibWeb/CSS/Parser/ParsingContext.h>
#include <LibWeb/CSS/Parser/TokenStream.h>
#include <LibWeb/CSS/Parser/Tokenizer.h>
#include <LibWeb/CSS/Parser/Types.h>
#include <LibWeb/CSS/PropertyID.h>
#include <LibWeb/CSS/Ratio.h>
#include <LibWeb/CSS/Selector.h>
#include <LibWeb/CSS/StyleValues/AbstractImageStyleValue.h>
#include <LibWeb/CSS/StyleValues/CSSMathValue.h>
#include <LibWeb/CSS/Supports.h>
#include <LibWeb/Forward.h>
namespace Web::CSS::Parser {
class PropertyDependencyNode;
namespace CalcParsing {
struct Operator {
char delim;
};
struct ProductNode;
struct SumNode;
struct InvertNode;
struct NegateNode;
using Node = Variant<Operator, Number, Dimension, CalculationNode::ConstantType, NonnullOwnPtr<ProductNode>, NonnullOwnPtr<SumNode>, NonnullOwnPtr<InvertNode>, NonnullOwnPtr<NegateNode>, NonnullRawPtr<ComponentValue const>>;
struct ProductNode {
Vector<Node> children;
};
struct SumNode {
Vector<Node> children;
};
struct InvertNode {
Node child;
};
struct NegateNode {
Node child;
};
}
class Parser {
public:
static Parser create(ParsingContext const&, StringView input, StringView encoding = "utf-8"sv);
Parser(Parser&&);
CSSStyleSheet* parse_as_css_stylesheet(Optional<URL::URL> location);
ElementInlineCSSStyleDeclaration* parse_as_style_attribute(DOM::Element&);
CSSRule* parse_as_css_rule();
Optional<StyleProperty> parse_as_supports_condition();
enum class SelectorParsingMode {
Standard,
// `<forgiving-selector-list>` and `<forgiving-relative-selector-list>`
// are handled with this parameter, not as separate functions.
// https://drafts.csswg.org/selectors/#forgiving-selector
Forgiving
};
// Contrary to the name, these parse a comma-separated list of selectors, according to the spec.
Optional<SelectorList> parse_as_selector(SelectorParsingMode = SelectorParsingMode::Standard);
Optional<SelectorList> parse_as_relative_selector(SelectorParsingMode = SelectorParsingMode::Standard);
Optional<Selector::PseudoElement> parse_as_pseudo_element_selector();
Vector<NonnullRefPtr<MediaQuery>> parse_as_media_query_list();
RefPtr<MediaQuery> parse_as_media_query();
RefPtr<Supports> parse_as_supports();
RefPtr<CSSStyleValue> parse_as_css_value(PropertyID);
Optional<ComponentValue> parse_as_component_value();
Vector<ParsedFontFace::Source> parse_as_font_face_src();
Vector<ComponentValue> parse_as_list_of_component_values();
static NonnullRefPtr<CSSStyleValue> resolve_unresolved_style_value(ParsingContext const&, DOM::Element&, Optional<CSS::Selector::PseudoElement::Type>, PropertyID, UnresolvedStyleValue const&);
[[nodiscard]] LengthOrCalculated parse_as_sizes_attribute(DOM::Element const& element, HTML::HTMLImageElement const* img = nullptr);
private:
Parser(ParsingContext const&, Vector<Token>);
enum class ParseError {
IncludesIgnoredVendorPrefix,
InternalError,
SyntaxError,
};
template<typename T>
using ParseErrorOr = ErrorOr<T, ParseError>;
// "Parse a stylesheet" is intended to be the normal parser entry point, for parsing stylesheets.
struct ParsedStyleSheet {
Optional<URL::URL> location;
Vector<Rule> rules;
};
template<typename T>
ParsedStyleSheet parse_a_stylesheet(TokenStream<T>&, Optional<URL::URL> location);
// "Parse a stylesheet’s contents" is intended for use by the CSSStyleSheet replace() method, and similar, which parse text into the contents of an existing stylesheet.
template<typename T>
Vector<Rule> parse_a_stylesheets_contents(TokenStream<T>&);
// "Parse a block’s contents" is intended for parsing the contents of any block in CSS (including things like the style attribute),
// and APIs such as the CSSStyleDeclaration cssText attribute.
template<typename T>
Vector<RuleOrListOfDeclarations> parse_a_blocks_contents(TokenStream<T>&);
// "Parse a rule" is intended for use by the CSSStyleSheet#insertRule method, and similar functions which might exist, which parse text into a single rule.
template<typename T>
Optional<Rule> parse_a_rule(TokenStream<T>&);
// "Parse a declaration" is used in @supports conditions. [CSS3-CONDITIONAL]
template<typename T>
Optional<Declaration> parse_a_declaration(TokenStream<T>&);
// "Parse a component value" is for things that need to consume a single value, like the parsing rules for attr().
template<typename T>
Optional<ComponentValue> parse_a_component_value(TokenStream<T>&);
// "Parse a list of component values" is for the contents of presentational attributes, which parse text into a single declaration’s value,
// or for parsing a stand-alone selector [SELECT] or list of Media Queries [MEDIAQ], as in Selectors API or the media HTML attribute.
template<typename T>
Vector<ComponentValue> parse_a_list_of_component_values(TokenStream<T>&);
template<typename T>
Vector<Vector<ComponentValue>> parse_a_comma_separated_list_of_component_values(TokenStream<T>&);
enum class SelectorType {
Standalone,
Relative
};
template<typename T>
ParseErrorOr<SelectorList> parse_a_selector_list(TokenStream<T>&, SelectorType, SelectorParsingMode = SelectorParsingMode::Standard);
template<typename T>
Vector<NonnullRefPtr<MediaQuery>> parse_a_media_query_list(TokenStream<T>&);
template<typename T>
RefPtr<Supports> parse_a_supports(TokenStream<T>&);
Optional<Selector::SimpleSelector::ANPlusBPattern> parse_a_n_plus_b_pattern(TokenStream<ComponentValue>&);
template<typename T>
[[nodiscard]] Vector<Rule> consume_a_stylesheets_contents(TokenStream<T>&);
enum class Nested {
No,
Yes,
};
template<typename T>
Optional<AtRule> consume_an_at_rule(TokenStream<T>&, Nested nested = Nested::No);
struct InvalidRuleError { };
template<typename T>
Variant<Empty, QualifiedRule, InvalidRuleError> consume_a_qualified_rule(TokenStream<T>&, Optional<Token::Type> stop_token = {}, Nested = Nested::No);
template<typename T>
Vector<RuleOrListOfDeclarations> consume_a_block(TokenStream<T>&);
template<typename T>
Vector<RuleOrListOfDeclarations> consume_a_blocks_contents(TokenStream<T>&);
template<typename T>
Optional<Declaration> consume_a_declaration(TokenStream<T>&, Nested = Nested::No);
template<typename T>
void consume_the_remnants_of_a_bad_declaration(TokenStream<T>&, Nested);
template<typename T>
[[nodiscard]] Vector<ComponentValue> consume_a_list_of_component_values(TokenStream<T>&, Optional<Token::Type> stop_token = {}, Nested = Nested::No);
template<typename T>
[[nodiscard]] ComponentValue consume_a_component_value(TokenStream<T>&);
template<typename T>
void consume_a_component_value_and_do_nothing(TokenStream<T>&);
template<typename T>
SimpleBlock consume_a_simple_block(TokenStream<T>&);
template<typename T>
void consume_a_simple_block_and_do_nothing(TokenStream<T>&);
template<typename T>
Function consume_a_function(TokenStream<T>&);
template<typename T>
void consume_a_function_and_do_nothing(TokenStream<T>&);
// TODO: consume_a_unicode_range_value()
Optional<GeneralEnclosed> parse_general_enclosed(TokenStream<ComponentValue>&);
template<typename T>
Vector<ParsedFontFace::Source> parse_font_face_src(TokenStream<T>&);
enum class AllowBlankLayerName {
No,
Yes,
};
Optional<FlyString> parse_layer_name(TokenStream<ComponentValue>&, AllowBlankLayerName);
bool is_valid_in_the_current_context(Declaration const&) const;
bool is_valid_in_the_current_context(AtRule const&) const;
bool is_valid_in_the_current_context(QualifiedRule const&) const;
GC::Ptr<CSSRule> convert_to_rule(Rule const&, Nested);
GC::Ptr<CSSStyleRule> convert_to_style_rule(QualifiedRule const&, Nested);
GC::Ptr<CSSFontFaceRule> convert_to_font_face_rule(AtRule const&);
GC::Ptr<CSSKeyframesRule> convert_to_keyframes_rule(AtRule const&);
GC::Ptr<CSSImportRule> convert_to_import_rule(AtRule const&);
GC::Ptr<CSSRule> convert_to_layer_rule(AtRule const&, Nested);
GC::Ptr<CSSMediaRule> convert_to_media_rule(AtRule const&, Nested);
GC::Ptr<CSSNamespaceRule> convert_to_namespace_rule(AtRule const&);
GC::Ptr<CSSSupportsRule> convert_to_supports_rule(AtRule const&, Nested);
GC::Ptr<CSSPropertyRule> convert_to_property_rule(AtRule const& rule);
PropertyOwningCSSStyleDeclaration* convert_to_style_declaration(Vector<Declaration> const&);
Optional<StyleProperty> convert_to_style_property(Declaration const&);
Optional<Dimension> parse_dimension(ComponentValue const&);
Optional<AngleOrCalculated> parse_angle(TokenStream<ComponentValue>&);
Optional<AnglePercentage> parse_angle_percentage(TokenStream<ComponentValue>&);
Optional<FlexOrCalculated> parse_flex(TokenStream<ComponentValue>&);
Optional<FrequencyOrCalculated> parse_frequency(TokenStream<ComponentValue>&);
Optional<FrequencyPercentage> parse_frequency_percentage(TokenStream<ComponentValue>&);
Optional<IntegerOrCalculated> parse_integer(TokenStream<ComponentValue>&);
Optional<LengthOrCalculated> parse_length(TokenStream<ComponentValue>&);
Optional<LengthPercentage> parse_length_percentage(TokenStream<ComponentValue>&);
Optional<NumberOrCalculated> parse_number(TokenStream<ComponentValue>&);
Optional<NumberPercentage> parse_number_percentage(TokenStream<ComponentValue>&);
Optional<ResolutionOrCalculated> parse_resolution(TokenStream<ComponentValue>&);
Optional<TimeOrCalculated> parse_time(TokenStream<ComponentValue>&);
Optional<TimePercentage> parse_time_percentage(TokenStream<ComponentValue>&);
Optional<LengthOrCalculated> parse_source_size_value(TokenStream<ComponentValue>&);
Optional<Ratio> parse_ratio(TokenStream<ComponentValue>&);
Optional<Gfx::UnicodeRange> parse_unicode_range(TokenStream<ComponentValue>&);
Optional<Gfx::UnicodeRange> parse_unicode_range(StringView);
Vector<Gfx::UnicodeRange> parse_unicode_ranges(TokenStream<ComponentValue>&);
Optional<GridSize> parse_grid_size(ComponentValue const&);
Optional<GridFitContent> parse_fit_content(Vector<ComponentValue> const&);
Optional<GridMinMax> parse_min_max(Vector<ComponentValue> const&);
Optional<GridRepeat> parse_repeat(Vector<ComponentValue> const&);
Optional<ExplicitGridTrack> parse_track_sizing_function(ComponentValue const&);
Optional<URL::URL> parse_url_function(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_url_value(TokenStream<ComponentValue>&);
Optional<ShapeRadius> parse_shape_radius(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_basic_shape_value(TokenStream<ComponentValue>&);
template<typename TElement>
Optional<Vector<TElement>> parse_color_stop_list(TokenStream<ComponentValue>& tokens, auto is_position, auto get_position);
Optional<Vector<LinearColorStopListElement>> parse_linear_color_stop_list(TokenStream<ComponentValue>&);
Optional<Vector<AngularColorStopListElement>> parse_angular_color_stop_list(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_linear_gradient_function(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_conic_gradient_function(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_radial_gradient_function(TokenStream<ComponentValue>&);
ParseErrorOr<NonnullRefPtr<CSSStyleValue>> parse_css_value(PropertyID, TokenStream<ComponentValue>&, Optional<String> original_source_text = {});
RefPtr<CSSStyleValue> parse_css_value_for_property(PropertyID, TokenStream<ComponentValue>&);
struct PropertyAndValue {
PropertyID property;
RefPtr<CSSStyleValue> style_value;
};
Optional<PropertyAndValue> parse_css_value_for_properties(ReadonlySpan<PropertyID>, TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_builtin_value(TokenStream<ComponentValue>&);
RefPtr<CSSMathValue> parse_calculated_value(ComponentValue const&);
RefPtr<CustomIdentStyleValue> parse_custom_ident_value(TokenStream<ComponentValue>&, std::initializer_list<StringView> blacklist);
// NOTE: Implemented in generated code. (GenerateCSSMathFunctions.cpp)
OwnPtr<CalculationNode> parse_math_function(PropertyID, Function const&);
OwnPtr<CalculationNode> parse_a_calc_function_node(Function const&);
RefPtr<CSSStyleValue> parse_keyword_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_hue_none_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_solidus_and_alpha_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_rgb_color_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_hsl_color_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_hwb_color_value(TokenStream<ComponentValue>&);
Optional<Array<RefPtr<CSSStyleValue>, 4>> parse_lab_like_color_value(TokenStream<ComponentValue>&, StringView);
RefPtr<CSSStyleValue> parse_lab_color_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_oklab_color_value(TokenStream<ComponentValue>&);
Optional<Array<RefPtr<CSSStyleValue>, 4>> parse_lch_like_color_value(TokenStream<ComponentValue>&, StringView);
RefPtr<CSSStyleValue> parse_lch_color_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_oklch_color_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_color_function(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_color_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_counter_value(TokenStream<ComponentValue>&);
enum class AllowReversed {
No,
Yes,
};
RefPtr<CSSStyleValue> parse_counter_definitions_value(TokenStream<ComponentValue>&, AllowReversed, i32 default_value_if_not_reversed);
RefPtr<CSSStyleValue> parse_rect_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_ratio_value(TokenStream<ComponentValue>&);
RefPtr<StringStyleValue> parse_string_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_image_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_paint_value(TokenStream<ComponentValue>&);
enum class PositionParsingMode {
Normal,
BackgroundPosition,
};
RefPtr<PositionStyleValue> parse_position_value(TokenStream<ComponentValue>&, PositionParsingMode = PositionParsingMode::Normal);
RefPtr<CSSStyleValue> parse_filter_value_list_value(TokenStream<ComponentValue>&);
RefPtr<StringStyleValue> parse_opentype_tag_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_dimension_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_angle_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_angle_percentage_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_flex_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_frequency_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_frequency_percentage_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_integer_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_length_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_length_percentage_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_number_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_number_percentage_value(TokenStream<ComponentValue>& tokens);
RefPtr<CSSStyleValue> parse_number_percentage_none_value(TokenStream<ComponentValue>& tokens);
RefPtr<CSSStyleValue> parse_percentage_value(TokenStream<ComponentValue>& tokens);
RefPtr<CSSStyleValue> parse_resolution_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_time_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_time_percentage_value(TokenStream<ComponentValue>&);
template<typename ParseFunction>
RefPtr<CSSStyleValue> parse_comma_separated_value_list(TokenStream<ComponentValue>&, ParseFunction);
RefPtr<CSSStyleValue> parse_simple_comma_separated_value_list(PropertyID, TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_all_as_single_keyword_value(TokenStream<ComponentValue>&, Keyword);
RefPtr<CSSStyleValue> parse_aspect_ratio_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_background_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_single_background_position_x_or_y_value(TokenStream<ComponentValue>&, PropertyID);
RefPtr<CSSStyleValue> parse_single_background_repeat_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_single_background_size_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_border_value(PropertyID, TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_border_radius_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_border_radius_shorthand_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_columns_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_content_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_counter_increment_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_counter_reset_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_counter_set_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_display_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_flex_shorthand_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_flex_flow_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_font_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_font_family_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_font_language_override_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_font_feature_settings_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_font_variation_settings_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_font_variant(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_font_variant_alternates_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_font_variant_caps_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_font_variant_east_asian_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_font_variant_emoji(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_font_variant_ligatures_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_font_variant_numeric_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_list_style_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_math_depth_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_overflow_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_place_content_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_place_items_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_place_self_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_quotes_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_scrollbar_gutter_value(TokenStream<ComponentValue>&);
enum class AllowInsetKeyword {
No,
Yes,
};
RefPtr<CSSStyleValue> parse_shadow_value(TokenStream<ComponentValue>&, AllowInsetKeyword);
RefPtr<CSSStyleValue> parse_single_shadow_value(TokenStream<ComponentValue>&, AllowInsetKeyword);
RefPtr<CSSStyleValue> parse_text_decoration_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_text_decoration_line_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_rotate_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_stroke_dasharray_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_easing_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_transform_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_transform_origin_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_transition_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_translate_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_scale_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_grid_track_size_list(TokenStream<ComponentValue>&, bool allow_separate_line_name_blocks = false);
RefPtr<CSSStyleValue> parse_grid_auto_track_sizes(TokenStream<ComponentValue>&);
RefPtr<GridAutoFlowStyleValue> parse_grid_auto_flow_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_grid_track_size_list_shorthand_value(PropertyID, TokenStream<ComponentValue>&);
RefPtr<GridTrackPlacementStyleValue> parse_grid_track_placement(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_grid_track_placement_shorthand_value(PropertyID, TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_grid_template_areas_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_grid_area_shorthand_value(TokenStream<ComponentValue>&);
RefPtr<CSSStyleValue> parse_grid_shorthand_value(TokenStream<ComponentValue>&);
OwnPtr<CalculationNode> convert_to_calculation_node(CalcParsing::Node const&);
OwnPtr<CalculationNode> parse_a_calculation(Vector<ComponentValue> const&);
ParseErrorOr<NonnullRefPtr<Selector>> parse_complex_selector(TokenStream<ComponentValue>&, SelectorType);
ParseErrorOr<Optional<Selector::CompoundSelector>> parse_compound_selector(TokenStream<ComponentValue>&);
Optional<Selector::Combinator> parse_selector_combinator(TokenStream<ComponentValue>&);
enum class AllowWildcardName {
No,
Yes,
};
Optional<Selector::SimpleSelector::QualifiedName> parse_selector_qualified_name(TokenStream<ComponentValue>&, AllowWildcardName);
ParseErrorOr<Selector::SimpleSelector> parse_attribute_simple_selector(ComponentValue const&);
ParseErrorOr<Selector::SimpleSelector> parse_pseudo_simple_selector(TokenStream<ComponentValue>&);
ParseErrorOr<Optional<Selector::SimpleSelector>> parse_simple_selector(TokenStream<ComponentValue>&);
NonnullRefPtr<MediaQuery> parse_media_query(TokenStream<ComponentValue>&);
OwnPtr<MediaCondition> parse_media_condition(TokenStream<ComponentValue>&, MediaCondition::AllowOr allow_or);
Optional<MediaFeature> parse_media_feature(TokenStream<ComponentValue>&);
Optional<MediaQuery::MediaType> parse_media_type(TokenStream<ComponentValue>&);
OwnPtr<MediaCondition> parse_media_in_parens(TokenStream<ComponentValue>&);
Optional<MediaFeatureValue> parse_media_feature_value(MediaFeatureID, TokenStream<ComponentValue>&);
OwnPtr<Supports::Condition> parse_supports_condition(TokenStream<ComponentValue>&);
Optional<Supports::InParens> parse_supports_in_parens(TokenStream<ComponentValue>&);
Optional<Supports::Feature> parse_supports_feature(TokenStream<ComponentValue>&);
NonnullRefPtr<CSSStyleValue> resolve_unresolved_style_value(DOM::Element&, Optional<Selector::PseudoElement::Type>, PropertyID, UnresolvedStyleValue const&);
bool expand_variables(DOM::Element&, Optional<Selector::PseudoElement::Type>, FlyString const& property_name, HashMap<FlyString, NonnullRefPtr<PropertyDependencyNode>>& dependencies, TokenStream<ComponentValue>& source, Vector<ComponentValue>& dest);
bool expand_unresolved_values(DOM::Element&, FlyString const& property_name, TokenStream<ComponentValue>& source, Vector<ComponentValue>& dest);
bool substitute_attr_function(DOM::Element& element, FlyString const& property_name, Function const& attr_function, Vector<ComponentValue>& dest);
static bool has_ignored_vendor_prefix(StringView);
static bool is_generic_font_family(Keyword);
struct PropertiesAndCustomProperties {
Vector<StyleProperty> properties;
HashMap<FlyString, StyleProperty> custom_properties;
};
PropertiesAndCustomProperties extract_properties(Vector<RuleOrListOfDeclarations> const&);
void extract_property(Declaration const&, Parser::PropertiesAndCustomProperties&);
ParsingContext m_context;
Vector<Token> m_tokens;
TokenStream<Token> m_token_stream;
enum class ContextType {
Unknown,
Style,
AtMedia,
AtFontFace,
AtKeyframes,
Keyframe,
AtSupports,
SupportsCondition,
AtLayer,
AtProperty,
};
static ContextType context_type_for_at_rule(FlyString const&);
Vector<ContextType> m_rule_context;
Vector<PseudoClass> m_pseudo_class_context; // Stack of pseudo-class functions we're currently inside
};
}
namespace Web {
CSS::CSSStyleSheet* parse_css_stylesheet(CSS::Parser::ParsingContext const&, StringView, Optional<URL::URL> location = {});
CSS::ElementInlineCSSStyleDeclaration* parse_css_style_attribute(CSS::Parser::ParsingContext const&, StringView, DOM::Element&);
RefPtr<CSS::CSSStyleValue> parse_css_value(CSS::Parser::ParsingContext const&, StringView, CSS::PropertyID property_id = CSS::PropertyID::Invalid);
Optional<CSS::SelectorList> parse_selector(CSS::Parser::ParsingContext const&, StringView);
Optional<CSS::SelectorList> parse_selector_for_nested_style_rule(CSS::Parser::ParsingContext const&, StringView);
Optional<CSS::Selector::PseudoElement> parse_pseudo_element_selector(CSS::Parser::ParsingContext const&, StringView);
CSS::CSSRule* parse_css_rule(CSS::Parser::ParsingContext const&, StringView);
RefPtr<CSS::MediaQuery> parse_media_query(CSS::Parser::ParsingContext const&, StringView);
Vector<NonnullRefPtr<CSS::MediaQuery>> parse_media_query_list(CSS::Parser::ParsingContext const&, StringView);
RefPtr<CSS::Supports> parse_css_supports(CSS::Parser::ParsingContext const&, StringView);
Optional<CSS::StyleProperty> parse_css_supports_condition(CSS::Parser::ParsingContext const&, StringView);
}
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