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LibWeb: Keep track of random function index within property value

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Caching keys for 'auto' <random-value-sharing> rely on this value to
distinguish between two random functions in a single property
This commit is contained in:
Callum Law 2025-11-05 13:22:12 +13:00 • committed by Sam Atkins
parent bad9efac22
commit 86e6aa0291
Notes: github-actions[bot] 2025-12-01 11:01:53 +00:00
2 changed files with 10 additions and 1 deletions
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9
Libraries/LibWeb/CSS/Parser/Parser.h
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@ -588,10 +588,17 @@ private:
TokenStream<Token> m_token_stream;
Vector<ValueParsingContext> m_value_context;
size_t m_random_function_index = 0;
auto push_temporary_value_parsing_context(ValueParsingContext&& context)
{
m_value_context.append(context);
return ScopeGuard { [&] { m_value_context.take_last(); } };
return ScopeGuard { [&] {
auto removed_context = m_value_context.take_last();
// Reset the random function index when we leave the top-level property parsing context
if (removed_context.has<PropertyID>() && !m_value_context.find_first_index_if([](ValueParsingContext context) { return context.has<PropertyID>(); }).has_value())
m_random_function_index = 0;
} };
}
bool context_allows_quirky_length() const;
bool context_allows_tree_counting_functions() const;