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LibWeb/CSS: Parse custom-idents more consistently

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These have a few rules that we didn't follow in most cases:
- CSS-wide keywords are not allowed. (inherit, initial, etc)
- `default` is not allowed.
- The above and any other disallowed identifiers must be tested
  case-insensitively.

This introduces a `parse_custom_ident_value()` method, which takes a
list of disallowed identifier names, and handles the above rules.
This commit is contained in:
Sam Atkins 2024-07-26 16:03:01 +01:00 • committed by Andreas Kling
commit 6ae2b8c3d9
Notes: github-actions[bot] 2024-07-27 12:46:26 +00:00
4 changed files with 80 additions and 20 deletions
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1
Userland/Libraries/LibWeb/CSS/Parser/Parser.h
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@ -279,6 +279,7 @@ private:
Optional<PropertyAndValue> parse_css_value_for_properties(ReadonlySpan<PropertyID>, TokenStream<ComponentValue>&);
RefPtr<StyleValue> parse_builtin_value(ComponentValue const&);
RefPtr<CalculatedStyleValue> 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&);