source: trunk/src/xmlpatterns/parser/qmaintainingreader_p.h@ 866

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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 Patternist_MaintainingReader_H
#define Patternist_MaintainingReader_H

#include <QSet>
#include <QSourceLocation>
#include <QStack>
#include <QStringList>
#include <QXmlStreamReader>

#include "qxpathhelper_p.h"
#include "qxslttokenlookup_p.h"

class QUrl;

QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE

namespace QPatternist
{
    /**
     * @short A structure that lists the optional and required
     * attributes of an element. Used with MaintainingReader.
     *
     * A constant source to misunderstandings is mixing up the order of
     * arguments for functions that takes a local name and a namespace. Be wary
     * of this.
     *
     * @author Frans Englich <[email protected]>
     * @since 4.5
     */
    template<typename TokenLookupClass,
             typename LookupKey = typename TokenLookupClass::NodeName>
    class ElementDescription
    {
    public:
        typedef QHash<LookupKey, ElementDescription<TokenLookupClass, LookupKey> > Hash;
        QSet<typename TokenLookupClass::NodeName> requiredAttributes;
        QSet<typename TokenLookupClass::NodeName> optionalAttributes;
    };

    /**
     * @short Base class for tokenizers that reads XML formats. This is
     * XSLTTokenizer, and the W3C XML Schema parser.
     *
     * MaintainingReader is intended for sub-classing.
     *
     * @tparam TokenLookupClass The name of the class that is generated by
     * QTokenAutomaton and which supplies tokenizing tokens. For XSLTTokenizer,
     * this is XSLTTokenLookup, for instance.
     *
     * @tparam LookupKey The type that is passed to validateElement() and is
     * the key in ElementDescription. For the schema code, where elements have
     * different interpretations depending on context, the lookup key is hence
     * not equal element name.
     *