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/*
* Copyright (C) 2005, 2006, 2009 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "core/dom/QualifiedName.h"
#include "core/html_names.h"
#include "core/mathml_names.h"
#include "core/svg_names.h"
#include "core/xlink_names.h"
#include "core/xml_names.h"
#include "core/xmlns_names.h"
#include "platform/wtf/Assertions.h"
#include "platform/wtf/HashSet.h"
#include "platform/wtf/StaticConstructors.h"
namespace blink {
struct SameSizeAsQualifiedNameImpl
: public RefCounted<SameSizeAsQualifiedNameImpl> {
unsigned bitfield;
void* pointers[4];
};
static_assert(sizeof(QualifiedName::QualifiedNameImpl) ==
sizeof(SameSizeAsQualifiedNameImpl),
"QualifiedNameImpl should stay small");
using QualifiedNameCache =
HashSet<QualifiedName::QualifiedNameImpl*, QualifiedNameHash>;
static QualifiedNameCache& GetQualifiedNameCache() {
// This code is lockless and thus assumes it all runs on one thread!
DCHECK(IsMainThread());
static QualifiedNameCache* g_name_cache = new QualifiedNameCache;
return *g_name_cache;
}
struct QNameComponentsTranslator {
static unsigned GetHash(const QualifiedNameData& data) {
return HashComponents(data.components_);
}
static bool Equal(QualifiedName::QualifiedNameImpl* name,
const QualifiedNameData& data) {
return data.components_.prefix_ == name->prefix_.Impl() &&
data.components_.local_name_ == name->local_name_.Impl() &&
data.components_.namespace_ == name->namespace_.Impl();
}
static void Translate(QualifiedName::QualifiedNameImpl*& location,
const QualifiedNameData& data,
unsigned) {
const QualifiedNameComponents& components = data.components_;
auto name = QualifiedName::QualifiedNameImpl::Create(
AtomicString(components.prefix_), AtomicString(components.local_name_),
AtomicString(components.namespace_), data.is_static_);
name->AddRef();
location = name.get();
}
};
QualifiedName::QualifiedName(const AtomicString& p,
const AtomicString& l,
const AtomicString& n) {
QualifiedNameData data = {
{p.Impl(), l.Impl(), n.IsEmpty() ? g_null_atom.Impl() : n.Impl()}, false};
QualifiedNameCache::AddResult add_result =
GetQualifiedNameCache().AddWithTranslator<QNameComponentsTranslator>(
data);
impl_ = *add_result.stored_value;
if (add_result.is_new_entry)
impl_->Release();
}
QualifiedName::QualifiedName(const AtomicString& p,
const AtomicString& l,
const AtomicString& n,
bool is_static) {
QualifiedNameData data = {{p.Impl(), l.Impl(), n.Impl()}, is_static};
QualifiedNameCache::AddResult add_result =
GetQualifiedNameCache().AddWithTranslator<QNameComponentsTranslator>(
data);
impl_ = *add_result.stored_value;
if (add_result.is_new_entry)
impl_->Release();
}
QualifiedName::~QualifiedName() {}
QualifiedName::QualifiedNameImpl::~QualifiedNameImpl() {
GetQualifiedNameCache().erase(this);
}
String QualifiedName::ToString() const {
String local = LocalName();
if (HasPrefix())
return Prefix().GetString() + ":" + local;
return local;
}
// Global init routines
DEFINE_GLOBAL(QualifiedName, g_any_name);
DEFINE_GLOBAL(QualifiedName, g_null_name);
void QualifiedName::InitAndReserveCapacityForSize(unsigned size) {
DCHECK(g_star_atom.Impl());
GetQualifiedNameCache().ReserveCapacityForSize(
size + 2 /*g_star_atom and g_null_atom */);
new ((void*)&g_any_name)
QualifiedName(g_null_atom, g_star_atom, g_star_atom, true);
new ((void*)&g_null_name)
QualifiedName(g_null_atom, g_null_atom, g_null_atom, true);
}
const AtomicString& QualifiedName::LocalNameUpper() const {
if (!impl_->local_name_upper_)
impl_->local_name_upper_ = impl_->local_name_.UpperASCII();
return impl_->local_name_upper_;
}
unsigned QualifiedName::QualifiedNameImpl::ComputeHash() const {
QualifiedNameComponents components = {prefix_.Impl(), local_name_.Impl(),
namespace_.Impl()};
return HashComponents(components);
}
void QualifiedName::CreateStatic(void* target_address,
StringImpl* name,
const AtomicString& name_namespace) {
new (target_address)
QualifiedName(g_null_atom, AtomicString(name), name_namespace, true);
}
void QualifiedName::CreateStatic(void* target_address, StringImpl* name) {
new (target_address)
QualifiedName(g_null_atom, AtomicString(name), g_null_atom, true);
}
} // namespace blink
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