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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_QuantifiedExpression_H
51#define Patternist_QuantifiedExpression_H
52
53#include <private/qpaircontainer_p.h>
54
55QT_BEGIN_NAMESPACE
56
57namespace QPatternist
58{
59 /**
60 * @short Implements XPath 2.0's quantification expressions @c some and @c every.
61 *
62 * @see <a href="http://www.w3.org/TR/xpath20/#id-quantified-expressions">XML Path Language
63 * (XPath) 2.0, 3.9 Quantified Expressions</a>
64 * @author Frans Englich <frans.englich@nokia.com>
65 * @ingroup Patternist_expressions
66 */
67 class Q_AUTOTEST_EXPORT QuantifiedExpression : public PairContainer
68 {
69 public:
70 enum Operator
71 {
72 Some = 1,
73 Every
74 };
75
76 QuantifiedExpression(const VariableSlotID varSlot,
77 const Operator quantifier,
78 const Expression::Ptr &inClause,
79 const Expression::Ptr &testExpression);
80
81 virtual bool evaluateEBV(const DynamicContext::Ptr &context) const;
82 virtual SequenceType::Ptr staticType() const;
83 virtual SequenceType::List expectedOperandTypes() const;
84
85 Operator operatorID() const;
86
87 /**
88 * Determines the string representation for a quantification operator.
89 *
90 * @return "some" if @p quantifier is Some, or "every" if @p quantifier
91 * is Every
92 */
93 static QString displayName(const Operator quantifier);
94
95 virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
96
97 inline Item mapToItem(const Item &item, const DynamicContext::Ptr &context) const;
98
99 private:
100 typedef QExplicitlySharedDataPointer<const QuantifiedExpression> ConstPtr;
101 const VariableSlotID m_varSlot;
102 const Operator m_quantifier;
103 };
104}
105
106QT_END_NAMESPACE
107
108#endif
109

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