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https://github.com/RGBCube/serenity
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269f9c6863
If a C++ object already has a JS wrapper, we don't need to go through the expensive type checks to figure out which kind of wrapper to create. Instead, just return the wrapper we already have! This gives a noticeable increase in smoothness on Acid3, where ~10% of CPU time was previously spent doing RTTI type checks in wrap(). With these changes, it's down to ~1%.
25 lines
733 B
C++
25 lines
733 B
C++
/*
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* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/TypeCasts.h>
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#include <LibWeb/Bindings/CSSRuleWrapper.h>
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#include <LibWeb/Bindings/CSSRuleWrapperFactory.h>
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#include <LibWeb/Bindings/CSSStyleRuleWrapper.h>
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#include <LibWeb/CSS/CSSStyleRule.h>
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namespace Web::Bindings {
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CSSRuleWrapper* wrap(JS::GlobalObject& global_object, CSS::CSSRule& rule)
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{
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if (rule.wrapper())
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return static_cast<CSSRuleWrapper*>(rule.wrapper());
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if (is<CSS::CSSStyleRule>(rule))
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return static_cast<CSSRuleWrapper*>(wrap_impl(global_object, verify_cast<CSS::CSSStyleRule>(rule)));
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return static_cast<CSSRuleWrapper*>(wrap_impl(global_object, rule));
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}
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}
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