| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtXmlPatterns module of the Qt Toolkit. |
| ** |
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| ** General Public License version 3 as published by the Free Software |
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| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
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| ****************************************************************************/ |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| |
| #ifndef QXMLSERIALIZER_P_H |
| #define QXMLSERIALIZER_P_H |
| |
| #include <QtCore/QIODevice> |
| #include <QtCore/QStack> |
| #include <QtCore/QTextCodec> |
| #include <QtXmlPatterns/QXmlQuery> |
| #include <QtXmlPatterns/QXmlNamePool> |
| #include <QtXmlPatterns/QXmlSerializer> |
| |
| #include <private/qnamepool_p.h> |
| #include <private/qabstractxmlreceiver_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QXmlSerializerPrivate : public QAbstractXmlReceiverPrivate |
| { |
| public: |
| QXmlSerializerPrivate(const QXmlQuery &q, |
| QIODevice *outputDevice); |
| |
| QStack<QPair<QXmlName, bool> > hasClosedElement; |
| bool isPreviousAtomic; |
| QXmlSerializer::State state; |
| const QPatternist::NamePool::Ptr np; |
| |
| /** |
| * This member worries me a bit. We never use it but nevertheless |
| * it is pushed and pops linear to startElement() and endElement(). |
| * An optimization would be to at least merge it with hasClosedElement, |
| * but even better to push it on demand. That is, namespaceBinding() |
| * pushes it up to the tree depth first when it is needed. |
| */ |
| QStack<QVector<QXmlName> > namespaces; |
| |
| QIODevice * device; |
| const QTextCodec * codec; |
| QTextCodec::ConverterState converterState; |
| /** |
| * Name cache. Since encoding QStrings are rather expensive |
| * operations to do, and we on top of that would have to do |
| * it each time a name appears, we here map names to their |
| * encoded equivalents. |
| * |
| * This means that when writing out large documents, the serialization |
| * of names after a while is reduced to a hash lookup and passing an |
| * existing byte array. |
| * |
| * We use QXmlName::Code as key as opposed to merely QName, because the |
| * prefix is of significance. |
| */ |
| QHash<QXmlName::Code, QByteArray> nameCache; |
| const QXmlQuery query; |
| |
| inline void write(const char c); |
| |
| private: |
| enum Constants |
| { |
| EstimatedTreeDepth = 10, |
| |
| /** |
| * We use a high count to avoid rehashing. We can afford it since we |
| * only allocate one hash for this. |
| */ |
| EstimatedNameCount = 60 |
| }; |
| }; |
| |
| void QXmlSerializerPrivate::write(const char c) |
| { |
| device->putChar(c); |
| } |
| QT_END_NAMESPACE |
| |
| #endif |