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39
40//
41// W A R N I N G
42// -------------
43//
44// This file is not part of the Qt API. It exists purely as an
45// implementation detail. This header file may change from version to
46// version without notice, or even be removed.
47//
48// We mean it.
49
50#ifndef Patternist_CopyOf_H
51#define Patternist_CopyOf_H
52
53#include <private/qsinglecontainer_p.h>
54
55QT_BEGIN_NAMESPACE
56
57namespace QPatternist
58{
59 /**
60 * @short Does node copying in a parameterized way, in order to deal with
61 * namespace preservation/inheritance.
62 *
63 * If someone tries to call evaluateEBV(), evaluateSingleton() or
64 * evaluateSequence() on us, we will infinitely loop. But apparently
65 * that's not possible because we're always a child of ElementConstructor,
66 * currently.
67 *
68 * @author Frans Englich <frans.englich@nokia.com>
69 * @ingroup Patternist_expressions
70 */
71 class CopyOf : public SingleContainer
72 {
73 public:
74 /**
75 * Creats a CopyOf where it is checked that the expression @p operand conforms
76 * to the type @p reqType.
77 */
78 CopyOf(const Expression::Ptr &operand,
79 const bool inheritNSS,
80 const bool preserveNSS);
81
82 virtual void evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const;
83
84 /**
85 * @returns always the SequenceType passed in the constructor to this class. That is, the
86 * SequenceType that the operand must conform to.
87 */
88 virtual SequenceType::Ptr staticType() const;
89
90 /**
91 * @returns a list containing one CommonSequenceTypes::ZeroOrMoreItems
92 */
93 virtual SequenceType::List expectedOperandTypes() const;
94
95 virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
96
97 inline Item mapToItem(const Item &source,
98 const DynamicContext::Ptr &context) const;
99
100 virtual Expression::Ptr compress(const StaticContext::Ptr &context);
101
102 virtual Properties properties() const;
103 virtual ItemType::Ptr expectedContextItemType() const;
104
105 private:
106 typedef QExplicitlySharedDataPointer<const CopyOf> ConstPtr;
107 const bool m_inheritNamespaces;
108 const bool m_preserveNamespaces;
109 const QAbstractXmlNodeModel::NodeCopySettings m_settings;
110 };
111}
112
113QT_END_NAMESPACE
114
115#endif
116

source code of qtxmlpatterns/src/xmlpatterns/expr/qcopyof_p.h