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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_CopyOf_H |
51 | #define Patternist_CopyOf_H |
52 | |
53 | #include <private/qsinglecontainer_p.h> |
54 | |
55 | QT_BEGIN_NAMESPACE |
56 | |
57 | namespace QPatternist |
58 | { |
59 | /** |
60 | * @short Does node copying in a parameterized way, in order to deal with |
61 | * namespace preservation/inheritance. |
62 | * |
63 | * If someone tries to call evaluateEBV(), evaluateSingleton() or |
64 | * evaluateSequence() on us, we will infinitely loop. But apparently |
65 | * that's not possible because we're always a child of ElementConstructor, |
66 | * currently. |
67 | * |
68 | * @author Frans Englich <frans.englich@nokia.com> |
69 | * @ingroup Patternist_expressions |
70 | */ |
71 | class CopyOf : public SingleContainer |
72 | { |
73 | public: |
74 | /** |
75 | * Creats a CopyOf where it is checked that the expression @p operand conforms |
76 | * to the type @p reqType. |
77 | */ |
78 | CopyOf(const Expression::Ptr &operand, |
79 | const bool inheritNSS, |
80 | const bool preserveNSS); |
81 | |
82 | virtual void evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const; |
83 | |
84 | /** |
85 | * @returns always the SequenceType passed in the constructor to this class. That is, the |
86 | * SequenceType that the operand must conform to. |
87 | */ |
88 | virtual SequenceType::Ptr staticType() const; |
89 | |
90 | /** |
91 | * @returns a list containing one CommonSequenceTypes::ZeroOrMoreItems |
92 | */ |
93 | virtual SequenceType::List expectedOperandTypes() const; |
94 | |
95 | virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const; |
96 | |
97 | inline Item mapToItem(const Item &source, |
98 | const DynamicContext::Ptr &context) const; |
99 | |
100 | virtual Expression::Ptr compress(const StaticContext::Ptr &context); |
101 | |
102 | virtual Properties properties() const; |
103 | virtual ItemType::Ptr expectedContextItemType() const; |
104 | |
105 | private: |
106 | typedef QExplicitlySharedDataPointer<const CopyOf> ConstPtr; |
107 | const bool m_inheritNamespaces; |
108 | const bool m_preserveNamespaces; |
109 | const QAbstractXmlNodeModel::NodeCopySettings m_settings; |
110 | }; |
111 | } |
112 | |
113 | QT_END_NAMESPACE |
114 | |
115 | #endif |
116 | |