1 files changed, 83 insertions, 0 deletions
diff --git a/src/xmlpatterns/expr/qorexpression.cpp b/src/xmlpatterns/expr/qorexpression.cpp
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+++ b/src/xmlpatterns/expr/qorexpression.cpp
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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 "qboolean_p.h"
+#include "qcommonvalues_p.h"
+#include "qliteral_p.h"
+
+#include "qorexpression_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+OrExpression::OrExpression(const Expression::Ptr &operand1,
+                           const Expression::Ptr &operand2) : AndExpression(operand1, operand2)
+{
+}
+
+bool OrExpression::evaluateEBV(const DynamicContext::Ptr &context) const
+{
+    return m_operand1->evaluateEBV(context) || m_operand2->evaluateEBV(context);
+}
+
+Expression::Ptr OrExpression::compress(const StaticContext::Ptr &context)
+{
+    const Expression::Ptr newMe(PairContainer::compress(context));
+
+    if(newMe != this)
+        return newMe;
+
+    /* Both operands mustn't be evaluated in order to be able to compress. */
+    if(m_operand1->isEvaluated() && m_operand1->evaluateEBV(context->dynamicContext()))
+        return wrapLiteral(CommonValues::BooleanTrue, context, this);
+    else if(m_operand2->isEvaluated() && m_operand2->evaluateEBV(context->dynamicContext()))
+        return wrapLiteral(CommonValues::BooleanTrue, context, this);
+    else
+        return Expression::Ptr(this);
+}
+
+ExpressionVisitorResult::Ptr OrExpression::accept(const ExpressionVisitor::Ptr &visitor) const
+{
+    return visitor->visit(this);
+}
+
+QT_END_NAMESPACE