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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_ParentNodeAxis_H
51#define Patternist_ParentNodeAxis_H
52
53#include <private/qemptycontainer_p.h>
54
55QT_BEGIN_NAMESPACE
56
57namespace QPatternist
58{
59 /**
60 * @short Corresponds to the expression <tt>parent::node()</tt>.
61 *
62 * This AST node is now useless, due to refactorings. Prevously we had
63 * Item QAbstractXmlNodeModel::parent(), which didn't have the overhead of
64 * allocating an iterator for a single node. However, in order to stream
65 * line the API it is now gone and hence the node performs exactly the same
66 * as AxisStep.
67 *
68 * @author Frans Englich <frans.englich@nokia.com>
69 * @ingroup Patternist_expressions
70 */
71 class ParentNodeAxis : public EmptyContainer
72 {
73 public:
74 virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;
75
76 /**
77 * @returns always DisableElimination
78 */
79 virtual Expression::Properties properties() const;
80
81 virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
82
83 /**
84 * @returns always CommonSequenceTypes::ExactlyOneNode;
85 */
86 virtual SequenceType::Ptr staticType() const;
87
88 /**
89 * @returns always BuiltinTypes::node;
90 */
91 virtual ItemType::Ptr expectedContextItemType() const;
92 };
93}
94
95QT_END_NAMESPACE
96
97#endif
98

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