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https://github.com/LadybirdBrowser/ladybird.git
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b3fd939628
Before this change, we would never apply CSS rules where the selector had a mixed-case tag name. This happened because our rule caches would key them on the lowercased tag name, but we didn't lowercase the tag name when fetching things from the cache. This uncovered the fact that the SVG2 spec has a bunch of style applied to non-rendered elements in a way that doesn't match other browsers. Instead of blindly following the spec, we now match other browsers.
90 lines
2.7 KiB
C++
90 lines
2.7 KiB
C++
/*
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* Copyright (c) 2022, Andreas Kling <andreas@ladybird.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/HashTable.h>
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#include <LibWeb/DOM/QualifiedName.h>
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namespace Web::DOM {
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static unsigned hash_impl(FlyString const& local_name, Optional<FlyString> const& prefix, Optional<FlyString> const& namespace_)
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{
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unsigned hash = local_name.hash();
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if (prefix.has_value())
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hash = pair_int_hash(hash, prefix->hash());
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if (namespace_.has_value())
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hash = pair_int_hash(hash, namespace_->hash());
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return hash;
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}
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struct ImplTraits : public Traits<QualifiedName::Impl*> {
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static unsigned hash(QualifiedName::Impl* impl)
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{
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return hash_impl(impl->local_name, impl->prefix, impl->namespace_);
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}
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static bool equals(QualifiedName::Impl* a, QualifiedName::Impl* b)
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{
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return a->local_name == b->local_name
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&& a->prefix == b->prefix
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&& a->namespace_ == b->namespace_;
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}
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};
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static HashTable<QualifiedName::Impl*, ImplTraits> impls;
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static NonnullRefPtr<QualifiedName::Impl> ensure_impl(FlyString const& local_name, Optional<FlyString> const& prefix, Optional<FlyString> const& namespace_)
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{
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unsigned hash = hash_impl(local_name, prefix, namespace_);
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auto it = impls.find(hash, [&](QualifiedName::Impl* entry) {
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return entry->local_name == local_name
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&& entry->prefix == prefix
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&& entry->namespace_ == namespace_;
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});
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if (it != impls.end())
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return *(*it);
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return adopt_ref(*new QualifiedName::Impl(local_name, prefix, namespace_));
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}
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QualifiedName::QualifiedName(FlyString const& local_name, Optional<FlyString> const& prefix, Optional<FlyString> const& namespace_)
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: m_impl(ensure_impl(local_name, prefix, namespace_))
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{
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}
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QualifiedName::Impl::Impl(FlyString const& a_local_name, Optional<FlyString> const& a_prefix, Optional<FlyString> const& a_namespace)
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: local_name(a_local_name)
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, lowercased_local_name(local_name.to_ascii_lowercase())
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, prefix(a_prefix)
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, namespace_(a_namespace)
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{
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impls.set(this);
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make_internal_string();
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}
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QualifiedName::Impl::~Impl()
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{
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impls.remove(this);
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}
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// https://dom.spec.whatwg.org/#concept-attribute-qualified-name
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// https://dom.spec.whatwg.org/#concept-element-qualified-name
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void QualifiedName::Impl::make_internal_string()
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{
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// This is possible to do according to the spec: "User agents could have this as an internal slot as an optimization."
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if (!prefix.has_value()) {
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as_string = local_name;
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return;
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}
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as_string = MUST(String::formatted("{}:{}", prefix.value(), local_name));
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}
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void QualifiedName::set_prefix(Optional<FlyString> value)
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{
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m_impl->prefix = move(value);
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}
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}
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