1 /*
2 * Copyright (C) 2005, 2006, 2009 Apple Inc. All rights reserved.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20 #include "config.h"
21
22 #ifdef SKIP_STATIC_CONSTRUCTORS_ON_GCC
23 #define WEBCORE_QUALIFIEDNAME_HIDE_GLOBALS 1
24 #else
25 #define QNAME_DEFAULT_CONSTRUCTOR
26 #endif
27
28 #include "QualifiedName.h"
29 #include "StaticConstructors.h"
30 #include <wtf/Assertions.h>
31 #include <wtf/HashSet.h>
32
33 namespace WebCore {
34
35 typedef HashSet<QualifiedName::QualifiedNameImpl*, QualifiedNameHash> QNameSet;
36
37 struct QNameComponentsTranslator {
hashWebCore::QNameComponentsTranslator38 static unsigned hash(const QualifiedNameComponents& components)
39 {
40 return hashComponents(components);
41 }
equalWebCore::QNameComponentsTranslator42 static bool equal(QualifiedName::QualifiedNameImpl* name, const QualifiedNameComponents& c)
43 {
44 return c.m_prefix == name->m_prefix.impl() && c.m_localName == name->m_localName.impl() && c.m_namespace == name->m_namespace.impl();
45 }
translateWebCore::QNameComponentsTranslator46 static void translate(QualifiedName::QualifiedNameImpl*& location, const QualifiedNameComponents& components, unsigned)
47 {
48 location = QualifiedName::QualifiedNameImpl::create(components.m_prefix, components.m_localName, components.m_namespace).releaseRef();
49 }
50 };
51
52 static QNameSet* gNameCache;
53
QualifiedName(const AtomicString & p,const AtomicString & l,const AtomicString & n)54 QualifiedName::QualifiedName(const AtomicString& p, const AtomicString& l, const AtomicString& n)
55 {
56 if (!gNameCache)
57 gNameCache = new QNameSet;
58 QualifiedNameComponents components = { p.impl(), l.impl(), n.isEmpty() ? nullAtom.impl() : n.impl() };
59 pair<QNameSet::iterator, bool> addResult = gNameCache->add<QualifiedNameComponents, QNameComponentsTranslator>(components);
60 m_impl = *addResult.first;
61 if (!addResult.second)
62 m_impl->ref();
63 }
64
deref()65 void QualifiedName::deref()
66 {
67 #ifdef QNAME_DEFAULT_CONSTRUCTOR
68 if (!m_impl)
69 return;
70 #endif
71
72 if (m_impl->hasOneRef())
73 gNameCache->remove(m_impl);
74 m_impl->deref();
75 }
76
toString() const77 String QualifiedName::toString() const
78 {
79 String local = localName();
80 if (hasPrefix())
81 return prefix() + ":" + local;
82 return local;
83 }
84
85 // Global init routines
DEFINE_GLOBAL(QualifiedName,anyName,nullAtom,starAtom,starAtom)86 DEFINE_GLOBAL(QualifiedName, anyName, nullAtom, starAtom, starAtom)
87
88 void QualifiedName::init()
89 {
90 static bool initialized;
91 if (!initialized) {
92 // Use placement new to initialize the globals.
93
94 AtomicString::init();
95 new ((void*)&anyName) QualifiedName(nullAtom, starAtom, starAtom);
96 initialized = true;
97 }
98 }
99
100 }
101