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42 #include "qbuiltintypes_p.h"
43 #include "qcommonsequencetypes_p.h"
44 #include "qgenericsequencetype_p.h"
46 #include "qcontextitem_p.h"
50 using namespace QPatternist;
52 Item ContextItem::evaluateSingleton(const DynamicContext::Ptr &context) const
54 return context->contextItem();
57 Expression::Ptr ContextItem::compress(const StaticContext::Ptr &context)
59 m_itemType = context->contextItemType();
60 return EmptyContainer::compress(context);
63 Expression::Ptr ContextItem::typeCheck(const StaticContext::Ptr &context,
64 const SequenceType::Ptr &reqType)
66 m_itemType = context->contextItemType();
67 return EmptyContainer::typeCheck(context, reqType);
70 SequenceType::Ptr ContextItem::staticType() const
72 /* We test m_itemType here because Patternist View calls staticType() before the typeCheck()
75 return makeGenericSequenceType(m_itemType, Cardinality::exactlyOne());
77 return CommonSequenceTypes::ExactlyOneItem;
80 Expression::Properties ContextItem::properties() const
82 return DisableElimination | RequiresContextItem | EvaluationCacheRedundant;
85 ExpressionVisitorResult::Ptr ContextItem::accept(const ExpressionVisitor::Ptr &visitor) const
87 return visitor->visit(this);
90 Expression::ID ContextItem::id() const
95 ItemType::Ptr ContextItem::expectedContextItemType() const
97 return BuiltinTypes::item;
100 const SourceLocationReflection *ContextItem::actualReflection() const
103 return m_expr.data();
108 void ContextItem::announceFocusType(const ItemType::Ptr &type)