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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_RangeVariableReference_H
51#define Patternist_RangeVariableReference_H
52
53#include <private/qvariablereference_p.h>
54
55QT_BEGIN_NAMESPACE
56
57namespace QPatternist
58{
59 /**
60 * @short A reference to a variable declared with @c for or a quantification
61 * expression, but not for instance a @c let binding.
62 *
63 * A range variable always represents a single item, while an other
64 * expression provides the binding and iteration. A @c for expression is
65 * a good example.
66 *
67 * @author Frans Englich <frans.englich@nokia.com>
68 * @ingroup Patternist_expressions
69 */
70 class RangeVariableReference : public VariableReference
71 {
72 public:
73 RangeVariableReference(const Expression::Ptr &sourceExpression,
74 const VariableSlotID slot);
75
76 virtual bool evaluateEBV(const DynamicContext::Ptr &context) const;
77 virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;
78 virtual SequenceType::Ptr staticType() const;
79
80 /**
81 * @returns IDRangeVariableReference
82 */
83 virtual ID id() const;
84
85 virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
86 virtual Properties properties() const;
87 private:
88 const Expression::Ptr m_sourceExpression;
89 };
90}
91
92QT_END_NAMESPACE
93
94#endif
95

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