diff -r 000000000000 -r 1918ee327afb src/xmlpatterns/functions/qelementavailablefn.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/functions/qelementavailablefn.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,120 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtXmlPatterns module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qqnameconstructor_p.h"
+
+#include "qelementavailablefn_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+ElementAvailableFN::ElementAvailableFN() : m_xsltInstructions(allXSLTInstructions())
+{
+}
+
+QSet<QString> ElementAvailableFN::allXSLTInstructions()
+{
+    enum
+    {
+        StringSetSize = 27
+    };
+
+    QSet<QString> retval;
+    retval.reserve(StringSetSize);
+
+    /* Alphabetically. */
+    retval.insert(QLatin1String("analyze-string"));
+    retval.insert(QLatin1String("apply-imports"));
+    retval.insert(QLatin1String("apply-templates"));
+    retval.insert(QLatin1String("attribute"));
+    retval.insert(QLatin1String("attribute-set"));
+    retval.insert(QLatin1String("call-template"));
+    retval.insert(QLatin1String("character-map"));
+    retval.insert(QLatin1String("choose"));
+    retval.insert(QLatin1String("comment"));
+    retval.insert(QLatin1String("copy"));
+    retval.insert(QLatin1String("copy-of"));
+    retval.insert(QLatin1String("document"));
+    retval.insert(QLatin1String("element"));
+    retval.insert(QLatin1String("fallback"));
+    retval.insert(QLatin1String("for-each"));
+    retval.insert(QLatin1String("for-each-group"));
+    retval.insert(QLatin1String("if"));
+    retval.insert(QLatin1String("message"));
+    retval.insert(QLatin1String("namespace"));
+    retval.insert(QLatin1String("next-match"));
+    retval.insert(QLatin1String("number"));
+    retval.insert(QLatin1String("perform-sort"));
+    retval.insert(QLatin1String("processing-instruction"));
+    retval.insert(QLatin1String("result-document"));
+    retval.insert(QLatin1String("sequence"));
+    retval.insert(QLatin1String("text"));
+    retval.insert(QLatin1String("variable"));
+
+    Q_ASSERT(retval.count() == StringSetSize);
+    return retval;
+}
+
+bool ElementAvailableFN::evaluateEBV(const DynamicContext::Ptr &context) const
+{
+    const Item arg(m_operands.first()->evaluateSingleton(context));
+    const QString stringName(arg.stringValue());
+
+    const QXmlName elementName(QNameConstructor::expandQName<DynamicContext::Ptr,
+                                                             ReportContext::XTDE1440,
+                                                             ReportContext::XTDE1440>(stringName,
+                                                                                      context,
+                                                                                      staticNamespaces(),
+                                                                                      this,
+                                                                                      false));
+
+    if(elementName.namespaceURI() != StandardNamespaces::xslt)
+        return false;
+
+    QString prefix;
+    QString localName;
+    XPathHelper::splitQName(stringName, prefix, localName);
+
+    return m_xsltInstructions.contains(localName);
+}
+
+QT_END_NAMESPACE