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164ed80244
Enable -Wexit-time-destructors for all in-tree library targets and update process-lifetime library statics so they no longer register exit-time destructors. Long-lived caches, lookup tables, singleton registries, and generated constants now use NeverDestroyed or leaked references where the data is intended to live until process exit. Update LibWeb, LibLine, and the binding generators so regenerated sources follow the same rule instead of reintroducing destructed statics.
95 lines
2.8 KiB
C++
95 lines
2.8 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 <AK/NeverDestroyed.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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{
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static NeverDestroyed<HashTable<QualifiedName::Impl*, ImplTraits>> impls;
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return *impls;
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}
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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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