1 /****************************************************************************
3 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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6 ** This file is part of the QtXmlPatterns module of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:LGPL$
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21 ** GNU General Public License Usage
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40 ****************************************************************************/
42 #include "qboolean_p.h"
43 #include "qcommonvalues_p.h"
44 #include "qliteral_p.h"
46 #include "qorexpression_p.h"
50 using namespace QPatternist;
52 OrExpression::OrExpression(const Expression::Ptr &operand1,
53 const Expression::Ptr &operand2) : AndExpression(operand1, operand2)
57 bool OrExpression::evaluateEBV(const DynamicContext::Ptr &context) const
59 return m_operand1->evaluateEBV(context) || m_operand2->evaluateEBV(context);
62 Expression::Ptr OrExpression::compress(const StaticContext::Ptr &context)
64 const Expression::Ptr newMe(PairContainer::compress(context));
69 /* Both operands mustn't be evaluated in order to be able to compress. */
70 if(m_operand1->isEvaluated() && m_operand1->evaluateEBV(context->dynamicContext()))
71 return wrapLiteral(CommonValues::BooleanTrue, context, this);
72 else if(m_operand2->isEvaluated() && m_operand2->evaluateEBV(context->dynamicContext()))
73 return wrapLiteral(CommonValues::BooleanTrue, context, this);
75 return Expression::Ptr(this);
78 ExpressionVisitorResult::Ptr OrExpression::accept(const ExpressionVisitor::Ptr &visitor) const
80 return visitor->visit(this);