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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_CurrentItemStore_H
51#define Patternist_CurrentItemStore_H
52
53#include <private/qsinglecontainer_p.h>
54
55QT_BEGIN_NAMESPACE
56
57namespace QPatternist
58{
59 /**
60 * @short Creates a DynamicContext which provides the focus item for the
61 * function @c fn:current().
62 *
63 * @author Frans Englich <frans.englich@nokia.com>
64 * @ingroup Patternist_expressions
65 * @since 4.5
66 */
67 class CurrentItemStore : public SingleContainer
68 {
69 public:
70 CurrentItemStore(const Expression::Ptr &operand);
71
72 virtual bool evaluateEBV(const DynamicContext::Ptr &) const;
73 virtual Item::Iterator::Ptr evaluateSequence(const DynamicContext::Ptr &) const;
74 virtual Item evaluateSingleton(const DynamicContext::Ptr &) const;
75
76 virtual SequenceType::List expectedOperandTypes() const;
77 virtual Expression::Ptr compress(const StaticContext::Ptr &context);
78 virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context,
79 const SequenceType::Ptr &reqType);
80
81 virtual Properties properties() const;
82
83 /**
84 * @returns the staticType() of its operand.
85 */
86 virtual SequenceType::Ptr staticType() const;
87 virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
88 virtual const SourceLocationReflection *actualReflection() const;
89
90 private:
91 static inline StaticContext::Ptr newStaticContext(const StaticContext::Ptr &context);
92 inline DynamicContext::Ptr createContext(const DynamicContext::Ptr &old) const;
93 };
94}
95
96QT_END_NAMESPACE
97
98#endif
99

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