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LibWeb: Spec-comment parse_a_stylesheet()

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Also introduce a `location` parameter when parsing a CSSStyleSheet. This
is not provided by anyone yet.
This commit is contained in:
Sam Atkins 2022-03-29 16:51:31 +01:00 • committed by Andreas Kling
parent 05bd0ca3ee
commit 87b125dcb9
4 changed files with 29 additions and 14 deletions
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27
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
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@ -160,14 +160,26 @@ Parser::Parser(ParsingContext const& context, StringView input, String const& en
{
}
NonnullRefPtr<CSSStyleSheet> Parser::parse_as_stylesheet()
NonnullRefPtr<CSSStyleSheet> Parser::parse_as_stylesheet(Optional<AK::URL> location)
{
return parse_a_stylesheet(m_token_stream);
return parse_a_stylesheet(m_token_stream, location);
}
// 5.3.3. Parse a stylesheet
// https://www.w3.org/TR/css-syntax-3/#parse-stylesheet
template<typename T>
NonnullRefPtr<CSSStyleSheet> Parser::parse_a_stylesheet(TokenStream<T>& tokens)
NonnullRefPtr<CSSStyleSheet> Parser::parse_a_stylesheet(TokenStream<T>& tokens, Optional<AK::URL> location)
{
// To parse a stylesheet from an input given an optional url location:
// 1. If input is a byte stream for stylesheet, decode bytes from input, and set input to the result.
// 2. Normalize input, and set input to the result.
// NOTE: These are done automatically when creating the Parser.
// 3. Create a new stylesheet, with its location set to location (or null, if location was not passed).
// NOTE: We create the stylesheet at the end.
// 4. Consume a list of rules from input, with the top-level flag set, and set the stylesheet’s value to the result.
auto parser_rules = consume_a_list_of_rules(tokens, true);
NonnullRefPtrVector<CSSRule> rules;
@ -177,7 +189,8 @@ NonnullRefPtr<CSSStyleSheet> Parser::parse_a_stylesheet(TokenStream<T>& tokens)
rules.append(*rule);
}
return CSSStyleSheet::create(rules);
// 5. Return the stylesheet.
return CSSStyleSheet::create(move(rules), move(location));
}
Optional<SelectorList> Parser::parse_as_selector(SelectorParsingMode parsing_mode)
@ -5224,12 +5237,12 @@ TimePercentage Parser::Dimension::time_percentage() const
namespace Web {
RefPtr<CSS::CSSStyleSheet> parse_css_stylesheet(CSS::ParsingContext const& context, StringView css)
RefPtr<CSS::CSSStyleSheet> parse_css_stylesheet(CSS::ParsingContext const& context, StringView css, Optional<AK::URL> location)
{
if (css.is_empty())
return CSS::CSSStyleSheet::create({});
return CSS::CSSStyleSheet::create({}, location);
CSS::Parser parser(context, css);
return parser.parse_as_stylesheet();
return parser.parse_as_stylesheet(location);
}
RefPtr<CSS::ElementInlineCSSStyleDeclaration> parse_css_style_attribute(CSS::ParsingContext const& context, StringView css, DOM::Element& element)