--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/janitors/qatomizer.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,125 @@
+/****************************************************************************
+**
+** 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 "qatomictype_p.h"
+#include "qbuiltintypes_p.h"
+#include "qcommonsequencetypes_p.h"
+#include "qgenericsequencetype_p.h"
+#include "qsequencemappingiterator_p.h"
+
+#include "qatomizer_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+Atomizer::Atomizer(const Expression::Ptr &operand) : SingleContainer(operand)
+{
+}
+
+Item::Iterator::Ptr Atomizer::mapToSequence(const Item &item, const DynamicContext::Ptr &) const
+{
+    /* Function & Operators, 2.4.2 fn:data, says "If the node does not have a
+     * typed value an error is raised [err:FOTY0012]."
+     * When does a node not have a typed value? */
+    Q_ASSERT(item);
+    return item.sequencedTypedValue();
+}
+
+Item::Iterator::Ptr Atomizer::evaluateSequence(const DynamicContext::Ptr &context) const
+{
+    return makeSequenceMappingIterator<Item>(ConstPtr(this),
+                                             m_operand->evaluateSequence(context),
+                                             context);
+}
+
+Item Atomizer::evaluateSingleton(const DynamicContext::Ptr &context) const
+{
+    const Item item(m_operand->evaluateSingleton(context));
+
+    if(!item) /* Empty is allowed, cardinality is considered '?' */
+        return Item();
+
+    const Item::Iterator::Ptr it(mapToSequence(item, context));
+    Q_ASSERT_X(it, Q_FUNC_INFO, "A valid QAbstractXmlForwardIterator must always be returned.");
+
+    Item result(it->next());
+    Q_ASSERT_X(!it->next(), Q_FUNC_INFO,
+               "evaluateSingleton should never be used if the cardinality is two or more");
+
+    return result;
+}
+
+Expression::Ptr Atomizer::typeCheck(const StaticContext::Ptr &context,
+                                    const SequenceType::Ptr &reqType)
+{
+    /* Compress -- the earlier the better. */
+    if(BuiltinTypes::xsAnyAtomicType->xdtTypeMatches(m_operand->staticType()->itemType()))
+        return m_operand->typeCheck(context, reqType);
+
+    return SingleContainer::typeCheck(context, reqType);
+}
+
+SequenceType::Ptr Atomizer::staticType() const
+{
+    const SequenceType::Ptr opt(m_operand->staticType());
+    return makeGenericSequenceType(opt->itemType()->atomizedType(),
+                                   opt->cardinality());
+}
+
+SequenceType::List Atomizer::expectedOperandTypes() const
+{
+    SequenceType::List result;
+    result.append(CommonSequenceTypes::ZeroOrMoreItems);
+    return result;
+}
+
+ExpressionVisitorResult::Ptr Atomizer::accept(const ExpressionVisitor::Ptr &visitor) const
+{
+    return visitor->visit(this);
+}
+
+const SourceLocationReflection *Atomizer::actualReflection() const
+{
+    return m_operand->actualReflection();
+}
+
+QT_END_NAMESPACE