--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/expr/qcommentconstructor.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,124 @@
+/****************************************************************************
+**
+** 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 "qcommonsequencetypes_p.h"
+#include "qpatternistlocale_p.h"
+#include "qnodebuilder_p.h"
+
+#include "qcommentconstructor_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+CommentConstructor::CommentConstructor(const Expression::Ptr &op) : SingleContainer(op)
+{
+}
+
+QString CommentConstructor::evaluateContent(const DynamicContext::Ptr &context) const
+{
+    const Item item(m_operand->evaluateSingleton(context));
+
+    if(!item)
+        return QString();
+
+    const QString content(item.stringValue());
+
+    if(content.contains(QLatin1String("--")))
+    {
+        context->error(QtXmlPatterns::tr("A comment cannot contain %1")
+                       .arg(formatData("--")),
+                       ReportContext::XQDY0072, this);
+    }
+    else if(content.endsWith(QLatin1Char('-')))
+    {
+        context->error(QtXmlPatterns::tr("A comment cannot end with a %1.")
+                       .arg(formatData(QLatin1Char('-'))),
+                       ReportContext::XQDY0072, this);
+    }
+
+    return content;
+}
+
+Item CommentConstructor::evaluateSingleton(const DynamicContext::Ptr &context) const
+{
+    const QString content(evaluateContent(context));
+    const NodeBuilder::Ptr nodeBuilder(context->nodeBuilder(QUrl()));
+    nodeBuilder->comment(content);
+
+    const QAbstractXmlNodeModel::Ptr nm(nodeBuilder->builtDocument());
+    context->addNodeModel(nm);
+
+    return nm->root(QXmlNodeModelIndex());
+}
+
+void CommentConstructor::evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const
+{
+    const QString content(evaluateContent(context));
+    QAbstractXmlReceiver *const receiver = context->outputReceiver();
+
+    receiver->comment(content);
+}
+
+SequenceType::Ptr CommentConstructor::staticType() const
+{
+    return CommonSequenceTypes::ExactlyOneComment;
+}
+
+SequenceType::List CommentConstructor::expectedOperandTypes() const
+{
+    SequenceType::List result;
+    result.append(CommonSequenceTypes::ZeroOrOneString);
+    return result;
+}
+
+Expression::Properties CommentConstructor::properties() const
+{
+    return DisableElimination | IsNodeConstructor;
+}
+
+ExpressionVisitorResult::Ptr
+CommentConstructor::accept(const ExpressionVisitor::Ptr &visitor) const
+{
+    return visitor->visit(this);
+}
+
+QT_END_NAMESPACE