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LibWeb: Add fast_is<T>() for some DOM and layout node subclasses

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The generic is<T>() uses dynamic_cast which is fine in the majority
of cases, but when one of them shows up in profiles, we can make it
faster by answering the is-a question manually.
This commit is contained in:
Andreas Kling 2021-01-17 09:34:01 +01:00
parent 65fa0c2774
commit fd441b954d
7 changed files with 24 additions and 17 deletions
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8
Userland/Libraries/LibWeb/DOM/Element.h
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@ -115,13 +115,7 @@ private:
Vector<FlyString> m_classes;
};
}
namespace AK {
template<>
inline bool is<Web::DOM::Element>(const Web::DOM::Node& input)
{
return input.is_element();
}
inline bool Node::fast_is<Element>() const { return is_element(); }
}