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6 ** This file is part of the QtXmlPatterns module of the Qt Toolkit.
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42 #include "qarithmeticexpression_p.h"
43 #include "qcommonvalues_p.h"
44 #include "qliteral_p.h"
45 #include "qschemanumeric_p.h"
47 #include "qunaryexpression_p.h"
51 using namespace QPatternist;
53 UnaryExpression::UnaryExpression(const AtomicMathematician::Operator op,
54 const Expression::Ptr &operand,
55 const StaticContext::Ptr &context) : ArithmeticExpression(wrapLiteral(CommonValues::IntegerZero, context, operand.data()),
59 Q_ASSERT(op == AtomicMathematician::Substract ||
60 op == AtomicMathematician::Add);
64 Item UnaryExpression::evaluateSingleton(const DynamicContext::Ptr &context) const
66 if(operatorID() == AtomicMathematician::Substract)
68 const Item item(m_operand2->evaluateSingleton(context));
71 return item.as<Numeric>()->toNegated();
76 return m_operand2->evaluateSingleton(context);