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42 #include "qbuiltintypes_p.h"
43 #include "qcommonsequencetypes_p.h"
44 #include "qcurrentitemcontext_p.h"
45 #include "qstaticcurrentcontext_p.h"
47 #include "qcurrentitemstore_p.h"
51 using namespace QPatternist;
53 CurrentItemStore::CurrentItemStore(const Expression::Ptr &operand) : SingleContainer(operand)
57 DynamicContext::Ptr CurrentItemStore::createContext(const DynamicContext::Ptr &old) const
59 return DynamicContext::Ptr(new CurrentItemContext(old->contextItem(), old));
62 bool CurrentItemStore::evaluateEBV(const DynamicContext::Ptr &context) const
64 return m_operand->evaluateEBV(createContext(context));
67 Item::Iterator::Ptr CurrentItemStore::evaluateSequence(const DynamicContext::Ptr &context) const
69 return m_operand->evaluateSequence(createContext(context));
72 Item CurrentItemStore::evaluateSingleton(const DynamicContext::Ptr &context) const
74 return m_operand->evaluateSingleton(createContext(context));
77 SequenceType::Ptr CurrentItemStore::staticType() const
79 return m_operand->staticType();
82 SequenceType::List CurrentItemStore::expectedOperandTypes() const
84 SequenceType::List result;
85 result.append(CommonSequenceTypes::ZeroOrMoreItems);
89 StaticContext::Ptr CurrentItemStore::newStaticContext(const StaticContext::Ptr &context)
91 /* It might be we are generated despite there is no focus. In that case
92 * an error will reported in case current() is used, but in any case we cannot
93 * crash, so use item() in case we have no focus.
95 * Such a case is when we're inside a named template, and it's invoked
97 const ItemType::Ptr t(context->contextItemType());
98 return StaticContext::Ptr(new StaticCurrentContext(t ? t : BuiltinTypes::item, context));
101 Expression::Ptr CurrentItemStore::compress(const StaticContext::Ptr &context)
103 const Expression::Ptr me(SingleContainer::compress(newStaticContext(context)));
109 /* If fn:current() isn't called, there's no point in us sticking
111 if(m_operand->deepProperties().testFlag(RequiresCurrentItem))
118 Expression::Ptr CurrentItemStore::typeCheck(const StaticContext::Ptr &context,
119 const SequenceType::Ptr &reqType)
121 return SingleContainer::typeCheck(newStaticContext(context), reqType);
124 ExpressionVisitorResult::Ptr CurrentItemStore::accept(const ExpressionVisitor::Ptr &visitor) const
126 return visitor->visit(this);
129 const SourceLocationReflection *CurrentItemStore::actualReflection() const
131 return m_operand->actualReflection();
134 Expression::Properties CurrentItemStore::properties() const
136 return m_operand->properties() & (RequiresFocus | IsEvaluated | DisableElimination);