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** This file is part of the QtXmlPatterns module of the Qt Toolkit. | |
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#include "qboolean_p.h" | |
#include "qcommonsequencetypes_p.h" | |
#include "qcommonvalues_p.h" | |
#include "qliteral_p.h" | |
#include "qandexpression_p.h" | |
QT_BEGIN_NAMESPACE | |
using namespace QPatternist; | |
AndExpression::AndExpression(const Expression::Ptr &operand1, | |
const Expression::Ptr &operand2) : PairContainer(operand1, operand2) | |
{ | |
} | |
bool AndExpression::evaluateEBV(const DynamicContext::Ptr &context) const | |
{ | |
return m_operand1->evaluateEBV(context) && m_operand2->evaluateEBV(context); | |
} | |
Expression::Ptr AndExpression::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::BooleanFalse, context, this); | |
else if(m_operand2->isEvaluated() && !m_operand2->evaluateEBV(context->dynamicContext())) | |
return wrapLiteral(CommonValues::BooleanFalse, context, this); | |
else | |
return Expression::Ptr(this); | |
} | |
SequenceType::List AndExpression::expectedOperandTypes() const | |
{ | |
SequenceType::List result; | |
result.append(CommonSequenceTypes::EBV); | |
result.append(CommonSequenceTypes::EBV); | |
return result; | |
} | |
SequenceType::Ptr AndExpression::staticType() const | |
{ | |
return CommonSequenceTypes::ExactlyOneBoolean; | |
} | |
ExpressionVisitorResult::Ptr AndExpression::accept(const ExpressionVisitor::Ptr &visitor) const | |
{ | |
return visitor->visit(this); | |
} | |
QT_END_NAMESPACE |