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6 ** This file is part of the QtXmlPatterns module of the Qt Toolkit.
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46 // This file is not part of the Qt API. It exists purely as an
47 // implementation detail. This header file may change from version to
48 // version without notice, or even be removed.
52 #ifndef PATTERNIST_VARIABLELOADER_P_H
53 #define PATTERNIST_VARIABLELOADER_P_H
55 #include <QtCore/QSet>
56 #include <QtXmlPatterns/QXmlQuery>
59 #include <private/qdynamiccontext_p.h>
60 #include <private/qexternalvariableloader_p.h>
68 class VariableLoader : public ExternalVariableLoader
71 typedef QHash<QXmlName, QVariant> BindingHash;
72 typedef QExplicitlySharedDataPointer<VariableLoader> Ptr;
74 inline VariableLoader(const NamePool::Ptr &np,
75 const VariableLoader::Ptr &previousLoader = VariableLoader::Ptr()) : m_namePool(np)
76 , m_previousLoader(previousLoader)
81 virtual QPatternist::SequenceType::Ptr announceExternalVariable(const QXmlName name,
82 const QPatternist::SequenceType::Ptr &declaredType);
83 virtual QPatternist::Item::Iterator::Ptr evaluateSequence(const QXmlName name,
84 const QPatternist::DynamicContext::Ptr &);
86 virtual QPatternist::Item evaluateSingleton(const QXmlName name,
87 const QPatternist::DynamicContext::Ptr &);
89 void removeBinding(const QXmlName &name);
90 bool hasBinding(const QXmlName &name) const;
91 QVariant valueFor(const QXmlName &name) const;
92 void addBinding(const QXmlName &name,
93 const QVariant &value);
95 bool isSameType(const QVariant &v1,
96 const QVariant &v2) const;
98 bool invalidationRequired(const QXmlName &name,
99 const QVariant &variant) const;
103 inline QPatternist::Item itemForName(const QXmlName &name) const;
105 const NamePool::Ptr m_namePool;
106 VariableLoader::Ptr m_previousLoader;
107 BindingHash m_bindingHash;
113 Q_DECLARE_METATYPE(QIODevice *)
114 Q_DECLARE_METATYPE(QXmlQuery)