source: trunk/src/xmlpatterns/parser/qtokenizer_p.h@ 841

/****************************************************************************
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** This file is part of the QtXmlPatterns module of the Qt Toolkit.
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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_Tokenizer_H
#define Patternist_Tokenizer_H

#include <QPair>
#include <QSharedData>
#include <QString>
#include <QUrl>

#include "qparsercontext_p.h"
#include "qtokensource_p.h"

/**
 * @file
 * @short Contains functions and classes used by the parser and tokenizer.
 */

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist
{
    typedef QPair<QString, Expression::Ptr> AttributeHolder;
    typedef QVector<AttributeHolder> AttributeHolderVector;

    class OrderSpecTransfer
    {
    public:
        typedef QList<OrderSpecTransfer> List;
        inline OrderSpecTransfer()
        {
        }

        inline OrderSpecTransfer(const Expression::Ptr &aExpr,
                                 const OrderBy::OrderSpec aOrderSpec) : expression(aExpr),
                                                                        orderSpec(aOrderSpec)
        {
            Q_ASSERT(expression);
        }

        Expression::Ptr     expression;
        OrderBy::OrderSpec  orderSpec;
    };

    /**
     * @short The value the parser, but not the tokenizers, uses for tokens and
     * non-terminals.
     *
     * It is inefficient but ensures nothing leaks, by invoking C++
     * destructors even in the cases the code throws exceptions. This might be
     * able to be done in a more efficient way -- suggestions are welcome.
     */
    class TokenValue
    {
    public:
        QString                         sval;

        Expression::Ptr                 expr;
        Expression::List                expressionList;

        Cardinality                     cardinality;
        ItemType::Ptr                   itemType;
        SequenceType::Ptr               sequenceType;
        FunctionArgument::List          functionArguments;
        FunctionArgument::Ptr           functionArgument;
        QVector<QXmlName>               qNameVector;
        QXmlName                        qName;
        /**
         * Holds enum values.
         */
        EnumUnion                       enums;

        AttributeHolder                 attributeHolder;
        AttributeHolderVector           attributeHolders;
        OrderSpecTransfer::List         orderSpecs;
        OrderSpecTransfer               orderSpec;
    };
}

QT_END_NAMESPACE

/**
 * Macro for the data type of semantic values; int by default.
 * See section Data Types of Semantic Values.
 */
#define YYSTYPE QPatternist::TokenValue