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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_InstanceOf_H
51#define Patternist_InstanceOf_H
52
53#include <private/qsinglecontainer_p.h>
54
55QT_BEGIN_NAMESPACE
56
57namespace QPatternist
58{
59
60 /**
61 * @short Implements XPath 2.0's <tt>instance of</tt> expression.
62 *
63 * @see <a href="http://www.w3.org/TR/xpath20/#id-instance-of">XML Path Language (XPath) 2.0,
64 * 3.10.1 Instance Of</a>
65 * @author Frans Englich <frans.englich@nokia.com>
66 * @ingroup Patternist_expressions
67 */
68 class Q_AUTOTEST_EXPORT InstanceOf : public SingleContainer
69 {
70 public:
71
72 InstanceOf(const Expression::Ptr &operand,
73 const SequenceType::Ptr &targetType);
74
75 virtual bool evaluateEBV(const DynamicContext::Ptr &) const;
76
77 virtual SequenceType::List expectedOperandTypes() const;
78 virtual SequenceType::Ptr staticType() const;
79 virtual Expression::Ptr compress(const StaticContext::Ptr &context);
80 virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
81
82 /**
83 * @returns the SequenceType that this <tt>instance of</tt> Expression
84 * is testing its operand against.
85 */
86 SequenceType::Ptr targetType() const;
87
88 private:
89 const SequenceType::Ptr m_targetType;
90 };
91}
92
93QT_END_NAMESPACE
94
95#endif
96

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