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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 QXMLSERIALIZER_P_H
53 #define QXMLSERIALIZER_P_H
55 #include <QtCore/QIODevice>
56 #include <QtCore/QStack>
57 #include <QtCore/QTextCodec>
58 #include <QtXmlPatterns/QXmlQuery>
59 #include <QtXmlPatterns/QXmlNamePool>
60 #include <QtXmlPatterns/QXmlSerializer>
62 #include <private/qnamepool_p.h>
63 #include <private/qabstractxmlreceiver_p.h>
69 class QXmlSerializerPrivate : public QAbstractXmlReceiverPrivate
72 QXmlSerializerPrivate(const QXmlQuery &q,
73 QIODevice *outputDevice);
75 QStack<QPair<QXmlName, bool> > hasClosedElement;
76 bool isPreviousAtomic;
77 QXmlSerializer::State state;
78 const QPatternist::NamePool::Ptr np;
81 * This member worries me a bit. We never use it but nevertheless
82 * it is pushed and pops linear to startElement() and endElement().
83 * An optimization would be to at least merge it with hasClosedElement,
84 * but even better to push it on demand. That is, namespaceBinding()
85 * pushes it up to the tree depth first when it is needed.
87 QStack<QVector<QXmlName> > namespaces;
90 const QTextCodec * codec;
91 QTextCodec::ConverterState converterState;
93 * Name cache. Since encoding QStrings are rather expensive
94 * operations to do, and we on top of that would have to do
95 * it each time a name appears, we here map names to their
96 * encoded equivalents.
98 * This means that when writing out large documents, the serialization
99 * of names after a while is reduced to a hash lookup and passing an
100 * existing byte array.
102 * We use QXmlName::Code as key as opposed to merely QName, because the
103 * prefix is of significance.
105 QHash<QXmlName::Code, QByteArray> nameCache;
106 const QXmlQuery query;
108 inline void write(const char c);
113 EstimatedTreeDepth = 10,
116 * We use a high count to avoid rehashing. We can afford it since we
117 * only allocate one hash for this.
119 EstimatedNameCount = 60
123 void QXmlSerializerPrivate::write(const char c)