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| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| |
| #ifndef Patternist_ArithmeticExpression_H |
| #define Patternist_ArithmeticExpression_H |
| |
| #include <private/qatomicmathematician_p.h> |
| #include <private/qpaircontainer_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace QPatternist |
| { |
| /** |
| * @short Implements arithmetics, such as multiplication and subtraction. |
| * |
| * |
| * Optimizations: there's some operator/value combos that are no ops. For |
| * instance, 0 + <value>, which is the case of unary plus. We can't compile |
| * those away early due to that type checks needs to be done but one can |
| * check for them in compress(). |
| * |
| * @see <a href="http://www.w3.org/TR/xpath20/#id-arithmetic">XML Path Language |
| * (XPath) 2.0, 3.4 Arithmetic Expressions</a> |
| * @author Frans Englich <frans.englich@nokia.com> |
| * @ingroup Patternist_expressions |
| */ |
| class Q_AUTOTEST_EXPORT ArithmeticExpression : public PairContainer |
| { |
| public: |
| ArithmeticExpression(const Expression::Ptr &operand1, |
| const AtomicMathematician::Operator op, |
| const Expression::Ptr &operand2); |
| |
| virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const; |
| |
| virtual SequenceType::Ptr staticType() const; |
| virtual SequenceType::List expectedOperandTypes() const; |
| AtomicMathematician::Operator operatorID() const; |
| |
| virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context, |
| const SequenceType::Ptr &reqType); |
| |
| static Item flexiblyCalculate(const Item &op1, |
| const AtomicMathematician::Operator op, |
| const Item &op2, |
| const AtomicMathematician::Ptr &mather, |
| const DynamicContext::Ptr &context, |
| const SourceLocationReflection *const reflection, |
| const ReportContext::ErrorCode code = ReportContext::XPTY0004, |
| const bool isCompat = false); |
| |
| static AtomicMathematician::Ptr |
| fetchMathematician(Expression::Ptr &t1, |
| Expression::Ptr &t2, |
| const AtomicMathematician::Operator op, |
| const bool issueError, |
| const ReportContext::Ptr &context, |
| const SourceLocationReflection *const reflection, |
| const ReportContext::ErrorCode code = ReportContext::XPTY0004, |
| const bool isCompat = false); |
| virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const; |
| |
| protected: |
| |
| private: |
| const AtomicMathematician::Operator m_op; |
| AtomicMathematician::Ptr m_mather; |
| bool m_isCompat; |
| }; |
| |
| inline AtomicMathematician::Operator ArithmeticExpression::operatorID() const |
| { |
| return m_op; |
| } |
| |
| } |
| |
| QT_END_NAMESPACE |
| |
| #endif |