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46 // This file is not part of the Qt API. It exists purely as an
47 // implementation detail. This header file may change from version to
48 // version without notice, or even be removed.
52 #ifndef Patternist_CopyOf_H
53 #define Patternist_CopyOf_H
55 #include <private/qsinglecontainer_p.h>
64 * @short Does node copying in a parameterized way, in order to deal with
65 * namespace preservation/inheritance.
67 * If someone tries to call evaluateEBV(), evaluateSingleton() or
68 * evaluateSequence() on us, we will infinitely loop. But apparently
69 * that's not possible because we're always a child of ElementConstructor,
72 * @author Frans Englich <frans.englich@nokia.com>
73 * @ingroup Patternist_expressions
75 class CopyOf : public SingleContainer
79 * Creats a CopyOf where it is checked that the expression @p operand conforms
80 * to the type @p reqType.
82 CopyOf(const Expression::Ptr &operand,
83 const bool inheritNSS,
84 const bool preserveNSS);
86 virtual void evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const;
89 * @returns always the SequenceType passed in the constructor to this class. That is, the
90 * SequenceType that the operand must conform to.
92 virtual SequenceType::Ptr staticType() const;
95 * @returns a list containing one CommonSequenceTypes::ZeroOrMoreItems
97 virtual SequenceType::List expectedOperandTypes() const;
99 virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
101 inline Item mapToItem(const Item &source,
102 const DynamicContext::Ptr &context) const;
104 virtual Expression::Ptr compress(const StaticContext::Ptr &context);
106 virtual Properties properties() const;
107 virtual ItemType::Ptr expectedContextItemType() const;
110 typedef QExplicitlySharedDataPointer<const CopyOf> ConstPtr;
111 const bool m_inheritNamespaces;
112 const bool m_preserveNamespaces;
113 const QAbstractXmlNodeModel::NodeCopySettings m_settings;