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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_ArgumentReference_H
51 #define Patternist_ArgumentReference_H
52 
53 #include <private/qvariablereference_p.h>
54 
55 QT_BEGIN_NAMESPACE
56 
57 namespace QPatternist
58 {
59     /**
60      * @short A reference to an argument declared in a UserFunction.
61      *
62      * This is in other words a variable reference in side a function
63      * body, that references a function argument.
64      *
65      * @author Frans Englich <frans.englich@nokia.com>
66      * @ingroup Patternist_expressions
67      */
68     class ArgumentReference : public VariableReference
69     {
70     public:
71         ArgumentReference(const SequenceType::Ptr &sourceType,
72                           const VariableSlotID slot);
73 
74         virtual bool evaluateEBV(const DynamicContext::Ptr &context) const;
75         virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;
76         virtual Item::Iterator::Ptr evaluateSequence(const DynamicContext::Ptr &context) const;
77         virtual SequenceType::Ptr staticType() const;
78         virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
79         virtual ID id() const;
80 
81     private:
82         const SequenceType::Ptr m_type;
83     };
84 }
85 
86 QT_END_NAMESPACE
87 
88 #endif
89