mirror of
https://github.com/RGBCube/serenity
synced 2025-05-15 01:44:58 +00:00
eb0fb38cac
For now, data URLs are explicitly limited to expected MIME types. For example, image-related styles accept image MIME types.
282 lines
15 KiB
C++
282 lines
15 KiB
C++
/*
|
||
* Copyright (c) 2020-2021, the SerenityOS developers.
|
||
* Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
|
||
*
|
||
* SPDX-License-Identifier: BSD-2-Clause
|
||
*/
|
||
|
||
#pragma once
|
||
|
||
#include <AK/NonnullOwnPtrVector.h>
|
||
#include <AK/NonnullRefPtrVector.h>
|
||
#include <AK/RefPtr.h>
|
||
#include <AK/Result.h>
|
||
#include <AK/Vector.h>
|
||
#include <LibWeb/CSS/CSSStyleDeclaration.h>
|
||
#include <LibWeb/CSS/MediaQuery.h>
|
||
#include <LibWeb/CSS/Parser/DeclarationOrAtRule.h>
|
||
#include <LibWeb/CSS/Parser/StyleBlockRule.h>
|
||
#include <LibWeb/CSS/Parser/StyleComponentValueRule.h>
|
||
#include <LibWeb/CSS/Parser/StyleDeclarationRule.h>
|
||
#include <LibWeb/CSS/Parser/StyleFunctionRule.h>
|
||
#include <LibWeb/CSS/Parser/StyleRule.h>
|
||
#include <LibWeb/CSS/Parser/Tokenizer.h>
|
||
#include <LibWeb/CSS/Selector.h>
|
||
#include <LibWeb/CSS/StyleValue.h>
|
||
#include <LibWeb/CSS/Supports.h>
|
||
|
||
namespace Web::CSS {
|
||
|
||
class CSSStyleSheet;
|
||
class CSSRule;
|
||
class CSSStyleRule;
|
||
struct StyleProperty;
|
||
enum class PropertyID;
|
||
|
||
class ParsingContext {
|
||
public:
|
||
ParsingContext() = default;
|
||
explicit ParsingContext(DOM::Document const&);
|
||
explicit ParsingContext(DOM::ParentNode&);
|
||
|
||
bool in_quirks_mode() const;
|
||
DOM::Document const* document() const { return m_document; }
|
||
AK::URL complete_url(String const&) const;
|
||
|
||
PropertyID current_property_id() const { return m_current_property_id; }
|
||
void set_current_property_id(PropertyID property_id) { m_current_property_id = property_id; }
|
||
|
||
private:
|
||
DOM::Document const* m_document { nullptr };
|
||
PropertyID m_current_property_id { PropertyID::Invalid };
|
||
};
|
||
|
||
template<typename T>
|
||
class TokenStream {
|
||
public:
|
||
explicit TokenStream(Vector<T> const&);
|
||
~TokenStream();
|
||
|
||
bool has_next_token();
|
||
T const& next_token();
|
||
T const& peek_token(int offset = 0);
|
||
T const& current_token();
|
||
void reconsume_current_input_token();
|
||
|
||
int position() const { return m_iterator_offset; }
|
||
void rewind_to_position(int);
|
||
|
||
void skip_whitespace();
|
||
|
||
void dump_all_tokens();
|
||
|
||
private:
|
||
Vector<T> const& m_tokens;
|
||
int m_iterator_offset { -1 };
|
||
|
||
T make_eof();
|
||
T m_eof;
|
||
};
|
||
|
||
class Parser {
|
||
public:
|
||
Parser(ParsingContext const&, StringView const& input, String const& encoding = "utf-8");
|
||
~Parser();
|
||
|
||
// The normal parser entry point, for parsing stylesheets.
|
||
NonnullRefPtr<CSSStyleSheet> parse_as_stylesheet();
|
||
// For the content of at-rules such as @media. It differs from "Parse a stylesheet" in the handling of <CDO-token> and <CDC-token>.
|
||
NonnullRefPtrVector<CSSRule> parse_as_list_of_rules();
|
||
// For use by the CSSStyleSheet#insertRule method, and similar functions which might exist, which parse text into a single rule.
|
||
RefPtr<CSSRule> parse_as_rule();
|
||
// Used in @supports conditions. [CSS3-CONDITIONAL]
|
||
Optional<StyleProperty> parse_as_declaration();
|
||
// For the contents of a style attribute, which parses text into the contents of a single style rule.
|
||
RefPtr<PropertyOwningCSSStyleDeclaration> parse_as_list_of_declarations();
|
||
// For things that need to consume a single value, like the parsing rules for attr().
|
||
Optional<StyleComponentValueRule> parse_as_component_value();
|
||
// 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.
|
||
Vector<StyleComponentValueRule> parse_as_list_of_component_values();
|
||
Vector<Vector<StyleComponentValueRule>> parse_as_comma_separated_list_of_component_values();
|
||
|
||
// Contrary to the name, these parse a comma-separated list of selectors, according to the spec.
|
||
Optional<SelectorList> parse_as_selector();
|
||
Optional<SelectorList> parse_as_relative_selector();
|
||
|
||
NonnullRefPtrVector<MediaQuery> parse_as_media_query_list();
|
||
RefPtr<MediaQuery> parse_as_media_query();
|
||
|
||
RefPtr<Supports> parse_as_supports();
|
||
|
||
RefPtr<StyleValue> parse_as_css_value(PropertyID);
|
||
|
||
// FIXME: This is a hack, while CSS::Supports is using a StyleDeclarationRule
|
||
[[nodiscard]] Optional<StyleProperty> convert_to_style_property(StyleDeclarationRule const&);
|
||
|
||
private:
|
||
enum class ParsingResult {
|
||
Done,
|
||
IncludesIgnoredVendorPrefix,
|
||
SyntaxError,
|
||
};
|
||
|
||
template<typename T>
|
||
NonnullRefPtr<CSSStyleSheet> parse_a_stylesheet(TokenStream<T>&);
|
||
template<typename T>
|
||
NonnullRefPtrVector<CSSRule> parse_a_list_of_rules(TokenStream<T>&);
|
||
template<typename T>
|
||
RefPtr<CSSRule> parse_a_rule(TokenStream<T>&);
|
||
template<typename T>
|
||
Optional<StyleProperty> parse_a_declaration(TokenStream<T>&);
|
||
template<typename T>
|
||
RefPtr<PropertyOwningCSSStyleDeclaration> parse_a_list_of_declarations(TokenStream<T>&);
|
||
template<typename T>
|
||
Optional<StyleComponentValueRule> parse_a_component_value(TokenStream<T>&);
|
||
template<typename T>
|
||
Vector<StyleComponentValueRule> parse_a_list_of_component_values(TokenStream<T>&);
|
||
template<typename T>
|
||
Vector<Vector<StyleComponentValueRule>> parse_a_comma_separated_list_of_component_values(TokenStream<T>&);
|
||
template<typename T>
|
||
Result<SelectorList, ParsingResult> parse_a_selector(TokenStream<T>&);
|
||
template<typename T>
|
||
Result<SelectorList, ParsingResult> parse_a_relative_selector(TokenStream<T>&);
|
||
template<typename T>
|
||
Result<SelectorList, ParsingResult> parse_a_selector_list(TokenStream<T>&);
|
||
template<typename T>
|
||
Result<SelectorList, ParsingResult> parse_a_relative_selector_list(TokenStream<T>&);
|
||
template<typename T>
|
||
NonnullRefPtrVector<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<StyleComponentValueRule>&);
|
||
|
||
[[nodiscard]] NonnullRefPtrVector<StyleRule> consume_a_list_of_rules(bool top_level);
|
||
template<typename T>
|
||
[[nodiscard]] NonnullRefPtrVector<StyleRule> consume_a_list_of_rules(TokenStream<T>&, bool top_level);
|
||
|
||
[[nodiscard]] NonnullRefPtr<StyleRule> consume_an_at_rule();
|
||
template<typename T>
|
||
[[nodiscard]] NonnullRefPtr<StyleRule> consume_an_at_rule(TokenStream<T>&);
|
||
|
||
[[nodiscard]] RefPtr<StyleRule> consume_a_qualified_rule();
|
||
template<typename T>
|
||
[[nodiscard]] RefPtr<StyleRule> consume_a_qualified_rule(TokenStream<T>&);
|
||
|
||
[[nodiscard]] Vector<DeclarationOrAtRule> consume_a_list_of_declarations();
|
||
template<typename T>
|
||
[[nodiscard]] Vector<DeclarationOrAtRule> consume_a_list_of_declarations(TokenStream<T>&);
|
||
|
||
[[nodiscard]] Optional<StyleDeclarationRule> consume_a_declaration();
|
||
template<typename T>
|
||
[[nodiscard]] Optional<StyleDeclarationRule> consume_a_declaration(TokenStream<T>&);
|
||
|
||
[[nodiscard]] StyleComponentValueRule consume_a_component_value();
|
||
template<typename T>
|
||
[[nodiscard]] StyleComponentValueRule consume_a_component_value(TokenStream<T>&);
|
||
|
||
[[nodiscard]] NonnullRefPtr<StyleBlockRule> consume_a_simple_block();
|
||
template<typename T>
|
||
[[nodiscard]] NonnullRefPtr<StyleBlockRule> consume_a_simple_block(TokenStream<T>&);
|
||
|
||
[[nodiscard]] NonnullRefPtr<StyleFunctionRule> consume_a_function();
|
||
template<typename T>
|
||
[[nodiscard]] NonnullRefPtr<StyleFunctionRule> consume_a_function(TokenStream<T>&);
|
||
|
||
struct GeneralEnclosed {
|
||
};
|
||
[[nodiscard]] Optional<GeneralEnclosed> parse_general_enclosed();
|
||
template<typename T>
|
||
[[nodiscard]] Optional<GeneralEnclosed> parse_general_enclosed(TokenStream<T>&);
|
||
|
||
[[nodiscard]] RefPtr<CSSRule> convert_to_rule(NonnullRefPtr<StyleRule>);
|
||
[[nodiscard]] RefPtr<PropertyOwningCSSStyleDeclaration> convert_to_declaration(NonnullRefPtr<StyleBlockRule>);
|
||
|
||
static Optional<float> try_parse_float(StringView string);
|
||
static Optional<Color> parse_color(ParsingContext const&, StyleComponentValueRule const&);
|
||
static Optional<Length> parse_length(ParsingContext const&, StyleComponentValueRule const&);
|
||
|
||
enum class AllowedDataUrlType {
|
||
None,
|
||
Image,
|
||
};
|
||
static Optional<AK::URL> parse_url_function(ParsingContext const&, StyleComponentValueRule const&, AllowedDataUrlType = AllowedDataUrlType::None);
|
||
|
||
Result<NonnullRefPtr<StyleValue>, ParsingResult> parse_css_value(PropertyID, TokenStream<StyleComponentValueRule>&);
|
||
static RefPtr<StyleValue> parse_css_value(ParsingContext const&, StyleComponentValueRule const&);
|
||
static RefPtr<StyleValue> parse_builtin_value(ParsingContext const&, StyleComponentValueRule const&);
|
||
static RefPtr<StyleValue> parse_dynamic_value(ParsingContext const&, StyleComponentValueRule const&);
|
||
static RefPtr<StyleValue> parse_length_value(ParsingContext const&, StyleComponentValueRule const&);
|
||
static RefPtr<StyleValue> parse_numeric_value(ParsingContext const&, StyleComponentValueRule const&);
|
||
static RefPtr<StyleValue> parse_identifier_value(ParsingContext const&, StyleComponentValueRule const&);
|
||
static RefPtr<StyleValue> parse_color_value(ParsingContext const&, StyleComponentValueRule const&);
|
||
static RefPtr<StyleValue> parse_string_value(ParsingContext const&, StyleComponentValueRule const&);
|
||
static RefPtr<StyleValue> parse_image_value(ParsingContext const&, StyleComponentValueRule const&);
|
||
static RefPtr<StyleValue> parse_background_value(ParsingContext const&, Vector<StyleComponentValueRule> const&);
|
||
static RefPtr<StyleValue> parse_background_image_value(ParsingContext const&, Vector<StyleComponentValueRule> const&);
|
||
static RefPtr<StyleValue> parse_background_repeat_value(ParsingContext const&, Vector<StyleComponentValueRule> const&);
|
||
static RefPtr<StyleValue> parse_border_value(ParsingContext const&, Vector<StyleComponentValueRule> const&);
|
||
static RefPtr<StyleValue> parse_border_radius_value(ParsingContext const&, Vector<StyleComponentValueRule> const&);
|
||
static RefPtr<StyleValue> parse_border_radius_shorthand_value(ParsingContext const&, Vector<StyleComponentValueRule> const&);
|
||
static RefPtr<StyleValue> parse_box_shadow_value(ParsingContext const&, Vector<StyleComponentValueRule> const&);
|
||
static RefPtr<StyleValue> parse_flex_value(ParsingContext const&, Vector<StyleComponentValueRule> const&);
|
||
static RefPtr<StyleValue> parse_flex_flow_value(ParsingContext const&, Vector<StyleComponentValueRule> const&);
|
||
static RefPtr<StyleValue> parse_font_value(ParsingContext const&, Vector<StyleComponentValueRule> const&);
|
||
static RefPtr<StyleValue> parse_font_family_value(ParsingContext const&, Vector<StyleComponentValueRule> const&, size_t start_index = 0);
|
||
static RefPtr<StyleValue> parse_list_style_value(ParsingContext const&, Vector<StyleComponentValueRule> const&);
|
||
static RefPtr<StyleValue> parse_overflow_value(ParsingContext const&, Vector<StyleComponentValueRule> const&);
|
||
static RefPtr<StyleValue> parse_text_decoration_value(ParsingContext const&, Vector<StyleComponentValueRule> const&);
|
||
static RefPtr<StyleValue> parse_transform_value(ParsingContext const&, Vector<StyleComponentValueRule> const&);
|
||
|
||
// calc() parsing, according to https://www.w3.org/TR/css-values-3/#calc-syntax
|
||
static OwnPtr<CalculatedStyleValue::CalcSum> parse_calc_sum(ParsingContext const&, TokenStream<StyleComponentValueRule>&);
|
||
static OwnPtr<CalculatedStyleValue::CalcProduct> parse_calc_product(ParsingContext const&, TokenStream<StyleComponentValueRule>&);
|
||
static Optional<CalculatedStyleValue::CalcValue> parse_calc_value(ParsingContext const&, TokenStream<StyleComponentValueRule>&);
|
||
static OwnPtr<CalculatedStyleValue::CalcNumberSum> parse_calc_number_sum(ParsingContext const&, TokenStream<StyleComponentValueRule>&);
|
||
static OwnPtr<CalculatedStyleValue::CalcNumberProduct> parse_calc_number_product(ParsingContext const&, TokenStream<StyleComponentValueRule>&);
|
||
static Optional<CalculatedStyleValue::CalcNumberValue> parse_calc_number_value(ParsingContext const&, TokenStream<StyleComponentValueRule>&);
|
||
static OwnPtr<CalculatedStyleValue::CalcProductPartWithOperator> parse_calc_product_part_with_operator(ParsingContext const&, TokenStream<StyleComponentValueRule>&);
|
||
static OwnPtr<CalculatedStyleValue::CalcSumPartWithOperator> parse_calc_sum_part_with_operator(ParsingContext const&, TokenStream<StyleComponentValueRule>&);
|
||
static OwnPtr<CalculatedStyleValue::CalcNumberProductPartWithOperator> parse_calc_number_product_part_with_operator(ParsingContext const&, TokenStream<StyleComponentValueRule>& tokens);
|
||
static OwnPtr<CalculatedStyleValue::CalcNumberSumPartWithOperator> parse_calc_number_sum_part_with_operator(ParsingContext const&, TokenStream<StyleComponentValueRule>&);
|
||
static OwnPtr<CalculatedStyleValue::CalcSum> parse_calc_expression(ParsingContext const&, Vector<StyleComponentValueRule> const&);
|
||
|
||
Result<NonnullRefPtr<Selector>, ParsingResult> parse_complex_selector(TokenStream<StyleComponentValueRule>&, bool allow_starting_combinator);
|
||
Result<Selector::CompoundSelector, ParsingResult> parse_compound_selector(TokenStream<StyleComponentValueRule>&);
|
||
Optional<Selector::Combinator> parse_selector_combinator(TokenStream<StyleComponentValueRule>&);
|
||
Result<Selector::SimpleSelector, ParsingResult> parse_simple_selector(TokenStream<StyleComponentValueRule>&);
|
||
|
||
NonnullRefPtr<MediaQuery> parse_media_query(TokenStream<StyleComponentValueRule>&);
|
||
OwnPtr<MediaQuery::MediaCondition> consume_media_condition(TokenStream<StyleComponentValueRule>&);
|
||
Optional<MediaQuery::MediaFeature> consume_media_feature(TokenStream<StyleComponentValueRule>&);
|
||
Optional<MediaQuery::MediaType> consume_media_type(TokenStream<StyleComponentValueRule>&);
|
||
|
||
OwnPtr<Supports::Condition> parse_supports_condition(TokenStream<StyleComponentValueRule>&);
|
||
Optional<Supports::InParens> parse_supports_in_parens(TokenStream<StyleComponentValueRule>&);
|
||
Optional<Supports::Feature> parse_supports_feature(TokenStream<StyleComponentValueRule>&);
|
||
|
||
static bool has_ignored_vendor_prefix(StringView const&);
|
||
|
||
ParsingContext m_context;
|
||
|
||
Tokenizer m_tokenizer;
|
||
Vector<Token> m_tokens;
|
||
TokenStream<Token> m_token_stream;
|
||
};
|
||
|
||
}
|
||
|
||
namespace Web {
|
||
|
||
RefPtr<CSS::CSSStyleSheet> parse_css(CSS::ParsingContext const&, StringView const&);
|
||
RefPtr<CSS::PropertyOwningCSSStyleDeclaration> parse_css_declaration(CSS::ParsingContext const&, StringView const&);
|
||
RefPtr<CSS::StyleValue> parse_css_value(CSS::ParsingContext const&, StringView const&, CSS::PropertyID property_id = CSS::PropertyID::Invalid);
|
||
Optional<CSS::SelectorList> parse_selector(CSS::ParsingContext const&, StringView const&);
|
||
RefPtr<CSS::CSSRule> parse_css_rule(CSS::ParsingContext const&, StringView);
|
||
RefPtr<CSS::MediaQuery> parse_media_query(CSS::ParsingContext const&, StringView const&);
|
||
NonnullRefPtrVector<CSS::MediaQuery> parse_media_query_list(CSS::ParsingContext const&, StringView const&);
|
||
RefPtr<CSS::Supports> parse_css_supports(CSS::ParsingContext const&, StringView const&);
|
||
|
||
RefPtr<CSS::StyleValue> parse_html_length(DOM::Document const&, StringView const&);
|
||
|
||
}
|