1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/*
* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/HashTable.h>
#include <LibWeb/DOM/QualifiedName.h>
namespace Web::DOM {
struct ImplTraits : public Traits<QualifiedName::Impl*> {
static unsigned hash(QualifiedName::Impl* impl)
{
return pair_int_hash(impl->local_name.hash(), pair_int_hash(impl->prefix.hash(), impl->namespace_.hash()));
}
static bool equals(QualifiedName::Impl* a, QualifiedName::Impl* b)
{
return a->local_name == b->local_name
&& a->prefix == b->prefix
&& a->namespace_ == b->namespace_;
}
};
static HashTable<QualifiedName::Impl*, ImplTraits> impls;
static NonnullRefPtr<QualifiedName::Impl> ensure_impl(FlyString const& local_name, FlyString const& prefix, FlyString const& namespace_)
{
auto hash = pair_int_hash(local_name.hash(), pair_int_hash(prefix.hash(), namespace_.hash()));
auto it = impls.find(hash, [&](QualifiedName::Impl* entry) {
return entry->local_name == local_name
&& entry->prefix == prefix
&& entry->namespace_ == namespace_;
});
if (it != impls.end())
return *(*it);
return adopt_ref(*new QualifiedName::Impl(local_name, prefix, namespace_));
}
QualifiedName::QualifiedName(FlyString const& local_name, FlyString const& prefix, FlyString const& namespace_)
: m_impl(ensure_impl(local_name, prefix, namespace_))
{
}
QualifiedName::Impl::Impl(FlyString const& a_local_name, FlyString const& a_prefix, FlyString const& a_namespace)
: local_name(a_local_name)
, prefix(a_prefix)
, namespace_(a_namespace)
{
impls.set(this);
make_internal_string();
}
QualifiedName::Impl::~Impl()
{
impls.remove(this);
}
// https://dom.spec.whatwg.org/#concept-attribute-qualified-name
// https://dom.spec.whatwg.org/#concept-element-qualified-name
void QualifiedName::Impl::make_internal_string()
{
// This is possible to do according to the spec: "User agents could have this as an internal slot as an optimization."
if (prefix.is_null()) {
as_string = local_name;
return;
}
as_string = String::formatted("{}:{}", prefix, local_name);
}
}
|
