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https://github.com/LadybirdBrowser/ladybird.git
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3bd04d2c58
There are an unfortunate number of DeprecatedString conversions required here, but these should all fall away and look much more pretty again when other places are also ported away from DeprecatedString. Leaves only the Element IDL interface left :^)
95 lines
3.0 KiB
C++
95 lines
3.0 KiB
C++
/*
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* Copyright (c) 2022, 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/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::QualifiedName(FlyString const& local_name, DeprecatedFlyString const& prefix, DeprecatedFlyString const& namespace_)
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: QualifiedName(local_name, prefix.is_null() ? Optional<FlyString> {} : MUST(FlyString::from_deprecated_fly_string(prefix)), namespace_.is_null() ? Optional<FlyString> {} : MUST(FlyString::from_deprecated_fly_string(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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, 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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