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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_VARIABLELOADER_P_H
51#define PATTERNIST_VARIABLELOADER_P_H
52
53#include <QtCore/QSet>
54#include <QtXmlPatterns/QXmlQuery>
55#include <QtDebug>
56
57#include <private/qdynamiccontext_p.h>
58#include <private/qexternalvariableloader_p.h>
59
60QT_BEGIN_NAMESPACE
61
62namespace QPatternist
63{
64 class VariableLoader : public ExternalVariableLoader
65 {
66 public:
67 typedef QHash<QXmlName, QVariant> BindingHash;
68 typedef QExplicitlySharedDataPointer<VariableLoader> Ptr;
69
70 inline VariableLoader(const NamePool::Ptr &np,
71 const VariableLoader::Ptr &previousLoader = VariableLoader::Ptr()) : m_namePool(np)
72 , m_previousLoader(previousLoader)
73
74 {
75 }
76
77 QPatternist::SequenceType::Ptr announceExternalVariable(const QXmlName name,
78 const QPatternist::SequenceType::Ptr &declaredType) override;
79 QPatternist::Item::Iterator::Ptr evaluateSequence(const QXmlName name,
80 const QPatternist::DynamicContext::Ptr &) override;
81
82 QPatternist::Item evaluateSingleton(const QXmlName name,
83 const QPatternist::DynamicContext::Ptr &) override;
84
85 void removeBinding(const QXmlName &name);
86 bool hasBinding(const QXmlName &name) const;
87 QVariant valueFor(const QXmlName &name) const;
88 void addBinding(const QXmlName &name,
89 const QVariant &value);
90
91 bool isSameType(const QVariant &v1,
92 const QVariant &v2) const;
93
94 bool invalidationRequired(const QXmlName &name,
95 const QVariant &variant) const;
96
97 private:
98
99 inline QPatternist::Item itemForName(const QXmlName &name) const;
100
101 const NamePool::Ptr m_namePool;
102 VariableLoader::Ptr m_previousLoader;
103 BindingHash m_bindingHash;
104 };
105}
106
107QT_END_NAMESPACE
108
109Q_DECLARE_METATYPE(QIODevice *)
110Q_DECLARE_METATYPE(QXmlQuery)
111
112#endif
113

source code of qtxmlpatterns/src/xmlpatterns/api/qvariableloader_p.h