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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qcommonsequencetypes_p.h"
+#include "qatomicstring_p.h"
+
+#include "qsimplecontentconstructor_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+SimpleContentConstructor::SimpleContentConstructor(const Expression::Ptr &operand) : SingleContainer(operand)
+{
+}
+
+Item SimpleContentConstructor::evaluateSingleton(const DynamicContext::Ptr &context) const
+{
+ const Item::Iterator::Ptr it(m_operand->evaluateSequence(context));
+ Item next(it->next());
+ QString result;
+
+ if(next)
+ {
+ result = next.stringValue();
+ next = it->next();
+ }
+ else
+ return Item();
+
+ while(next)
+ {
+ result += QLatin1Char(' ');
+ result += next.stringValue();
+ next = it->next();
+ }
+
+ return AtomicString::fromValue(result);
+}
+
+Expression::Ptr SimpleContentConstructor::compress(const StaticContext::Ptr &context)
+{
+ const Expression::Ptr me(SingleContainer::compress(context));
+
+ if(me.data() == this)
+ {
+ /* Optimization: if we will evaluate to a single string, we're not
+ * necessary. */
+ if(CommonSequenceTypes::ExactlyOneString->matches(m_operand->staticType()))
+ return m_operand;
+ }
+
+ return me;
+}
+
+SequenceType::List SimpleContentConstructor::expectedOperandTypes() const
+{
+ SequenceType::List result;
+ result.append(CommonSequenceTypes::ZeroOrMoreAtomicTypes);
+ return result;
+}
+
+SequenceType::Ptr SimpleContentConstructor::staticType() const
+{
+ if(m_operand->staticType()->cardinality().allowsEmpty())
+ return CommonSequenceTypes::ZeroOrOneString;
+ else
+ return CommonSequenceTypes::ExactlyOneString;
+}
+
+ExpressionVisitorResult::Ptr SimpleContentConstructor::accept(const ExpressionVisitor::Ptr &visitor) const
+{
+ return visitor->visit(this);
+}
+
+QT_END_NAMESPACE