--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/expr/qcomputednamespaceconstructor.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,136 @@
+/****************************************************************************
+**
+** 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 "qanyuri_p.h"
+#include "qbuiltintypes_p.h"
+#include "qcommonsequencetypes_p.h"
+#include "qpatternistlocale_p.h"
+#include "private/qxmlutils_p.h"
+
+#include "qcomputednamespaceconstructor_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+ComputedNamespaceConstructor::ComputedNamespaceConstructor(const Expression::Ptr &prefix,
+                                                           const Expression::Ptr &namespaceURI) : PairContainer(prefix, namespaceURI)
+{
+}
+
+void ComputedNamespaceConstructor::evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const
+{
+    const Item prefixItem(m_operand1->evaluateSingleton(context));
+    const QString prefix(prefixItem ? prefixItem.stringValue() : QString());
+
+    const Item namespaceItem(m_operand2->evaluateSingleton(context));
+    const QString namespaceURI(namespaceItem ? namespaceItem.stringValue() : QString());
+
+    if(namespaceURI.isEmpty())
+    {
+        context->error(QtXmlPatterns::tr("In a namespace constructor, the value for a namespace cannot be an empty string."),
+                       ReportContext::XTDE0930,
+                       this);
+    }
+
+    /* One optimization could be to store a pointer to
+     * the name pool as a member in order to avoid the virtual call(s). */
+    const NamePool::Ptr np(context->namePool());
+
+    if(!prefix.isEmpty() && !QXmlUtils::isNCName(prefix))
+    {
+        context->error(QtXmlPatterns::tr("The prefix must be a valid %1, which %2 is not.")
+                                        .arg(formatType(np, BuiltinTypes::xsNCName),
+                                             formatKeyword(prefix)),
+                       ReportContext::XTDE0920,
+                       this);
+    }
+    const QXmlName binding(np->allocateBinding(prefix, namespaceURI));
+
+    AnyURI::toQUrl<ReportContext::XTDE0905, DynamicContext::Ptr>(namespaceURI,
+                                                                 context,
+                                                                 this);
+
+    if(binding.prefix() == StandardPrefixes::xmlns)
+    {
+        context->error(QtXmlPatterns::tr("The prefix %1 cannot be bound.")
+                                        .arg(formatKeyword(prefix)),
+                       ReportContext::XTDE0920,
+                       this);
+    }
+
+    if((binding.prefix() == StandardPrefixes::xml && binding.namespaceURI() != StandardNamespaces::xml)
+       ||
+       (binding.prefix() != StandardPrefixes::xml && binding.namespaceURI() == StandardNamespaces::xml))
+    {
+        context->error(QtXmlPatterns::tr("Only the prefix %1 can be bound to %2 and vice versa.")
+                                        .arg(formatKeyword(prefix), formatKeyword(namespaceURI)),
+                       ReportContext::XTDE0925,
+                       this);
+    }
+
+     context->outputReceiver()->namespaceBinding(binding);
+}
+
+SequenceType::Ptr ComputedNamespaceConstructor::staticType() const
+{
+    return CommonSequenceTypes::ExactlyOneAttribute;
+}
+
+SequenceType::List ComputedNamespaceConstructor::expectedOperandTypes() const
+{
+    SequenceType::List result;
+    result.append(CommonSequenceTypes::ZeroOrOneString);
+    result.append(CommonSequenceTypes::ZeroOrOneString);
+    return result;
+}
+
+Expression::Properties ComputedNamespaceConstructor::properties() const
+{
+    return DisableElimination | IsNodeConstructor;
+}
+
+ExpressionVisitorResult::Ptr ComputedNamespaceConstructor::accept(const ExpressionVisitor::Ptr &visitor) const
+{
+    return visitor->visit(this);
+}
+
+QT_END_NAMESPACE