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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.
*
*/
#ifndef QualifiedName_h
#define QualifiedName_h
#include <wtf/HashTraits.h>
#include <wtf/text/AtomicString.h>
namespace WebCore {
struct QualifiedNameComponents {
StringImpl* m_prefix;
StringImpl* m_localName;
StringImpl* m_namespace;
};
class QualifiedName {
WTF_MAKE_FAST_ALLOCATED;
public:
class QualifiedNameImpl : public RefCounted<QualifiedNameImpl> {
public:
static PassRefPtr<QualifiedNameImpl> create(const AtomicString& prefix, const AtomicString& localName, const AtomicString& namespaceURI)
{
return adoptRef(new QualifiedNameImpl(prefix, localName, namespaceURI));
}
const AtomicString m_prefix;
const AtomicString m_localName;
const AtomicString m_namespace;
mutable AtomicString m_localNameUpper;
private:
QualifiedNameImpl(const AtomicString& prefix, const AtomicString& localName, const AtomicString& namespaceURI)
: m_prefix(prefix)
, m_localName(localName)
, m_namespace(namespaceURI)
{
ASSERT(!namespaceURI.isEmpty() || namespaceURI.isNull());
}
};
QualifiedName(const AtomicString& prefix, const AtomicString& localName, const AtomicString& namespaceURI);
QualifiedName(const AtomicString& prefix, const char* localName, const AtomicString& namespaceURI);
QualifiedName(WTF::HashTableDeletedValueType) : m_impl(hashTableDeletedValue()) { }
bool isHashTableDeletedValue() const { return m_impl == hashTableDeletedValue(); }
~QualifiedName();
#ifdef QNAME_DEFAULT_CONSTRUCTOR
QualifiedName() : m_impl(0) { }
#endif
QualifiedName(const QualifiedName& other) : m_impl(other.m_impl) { ref(); }
const QualifiedName& operator=(const QualifiedName& other) { other.ref(); deref(); m_impl = other.m_impl; return *this; }
bool operator==(const QualifiedName& other) const { return m_impl == other.m_impl; }
bool operator!=(const QualifiedName& other) const { return !(*this == other); }
bool matches(const QualifiedName& other) const { return m_impl == other.m_impl || (localName() == other.localName() && namespaceURI() == other.namespaceURI()); }
bool hasPrefix() const { return m_impl->m_prefix != nullAtom; }
void setPrefix(const AtomicString& prefix) { *this = QualifiedName(prefix, localName(), namespaceURI()); }
const AtomicString& prefix() const { return m_impl->m_prefix; }
const AtomicString& localName() const { return m_impl->m_localName; }
const AtomicString& namespaceURI() const { return m_impl->m_namespace; }
// Uppercased localName, cached for efficiency
const AtomicString& localNameUpper() const;
String toString() const;
QualifiedNameImpl* impl() const { return m_impl; }
// Init routine for globals
static void init();
private:
void init(const AtomicString& prefix, const AtomicString& localName, const AtomicString& namespaceURI);
void ref() const { m_impl->ref(); }
void deref();
static QualifiedNameImpl* hashTableDeletedValue() { return RefPtr<QualifiedNameImpl>::hashTableDeletedValue(); }
QualifiedNameImpl* m_impl;
};
#ifndef WEBCORE_QUALIFIEDNAME_HIDE_GLOBALS
extern const QualifiedName anyName;
inline const QualifiedName& anyQName() { return anyName; }
#endif
inline bool operator==(const AtomicString& a, const QualifiedName& q) { return a == q.localName(); }
inline bool operator!=(const AtomicString& a, const QualifiedName& q) { return a != q.localName(); }
inline bool operator==(const QualifiedName& q, const AtomicString& a) { return a == q.localName(); }
inline bool operator!=(const QualifiedName& q, const AtomicString& a) { return a != q.localName(); }
inline unsigned hashComponents(const QualifiedNameComponents& buf)
{
return StringHasher::hashMemory<sizeof(QualifiedNameComponents)>(&buf);
}
struct QualifiedNameHash {
static unsigned hash(const QualifiedName& name) { return hash(name.impl()); }
static unsigned hash(const QualifiedName::QualifiedNameImpl* name)
{
QualifiedNameComponents c = { name->m_prefix.impl(), name->m_localName.impl(), name->m_namespace.impl() };
return hashComponents(c);
}
static bool equal(const QualifiedName& a, const QualifiedName& b) { return a == b; }
static bool equal(const QualifiedName::QualifiedNameImpl* a, const QualifiedName::QualifiedNameImpl* b) { return a == b; }
static const bool safeToCompareToEmptyOrDeleted = false;
};
}
namespace WTF {
template<typename T> struct DefaultHash;
template<> struct DefaultHash<WebCore::QualifiedName> {
typedef WebCore::QualifiedNameHash Hash;
};
template<> struct HashTraits<WebCore::QualifiedName> : SimpleClassHashTraits<WebCore::QualifiedName> {
static const bool emptyValueIsZero = false;
static WebCore::QualifiedName emptyValue() { return WebCore::QualifiedName(nullAtom, nullAtom, nullAtom); }
};
}
#endif
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