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39 
40 #include "qbuiltintypes_p.h"
41 #include "qcommonsequencetypes_p.h"
42 
43 #include "qparentnodeaxis_p.h"
44 
45 QT_BEGIN_NAMESPACE
46 
47 using namespace QPatternist;
48 
evaluateSingleton(const DynamicContext::Ptr & context) const49 Item ParentNodeAxis::evaluateSingleton(const DynamicContext::Ptr &context) const
50 {
51     return context->contextItem().asNode().iterate(QXmlNodeModelIndex::AxisParent)->next();
52 }
53 
properties() const54 Expression::Properties ParentNodeAxis::properties() const
55 {
56     return DisableElimination | RequiresContextItem;
57 }
58 
accept(const ExpressionVisitor::Ptr & visitor) const59 ExpressionVisitorResult::Ptr ParentNodeAxis::accept(const ExpressionVisitor::Ptr &visitor) const
60 {
61     return visitor->visit(this);
62 }
63 
expectedContextItemType() const64 ItemType::Ptr ParentNodeAxis::expectedContextItemType() const
65 {
66     return BuiltinTypes::node;
67 }
68 
staticType() const69 SequenceType::Ptr ParentNodeAxis::staticType() const
70 {
71     // Parentless node exists.
72     return CommonSequenceTypes::ZeroOrOneNode;
73 }
74 
75 QT_END_NAMESPACE
76