qacceltreeresourceloader_p.h

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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_AccelTreeResourceLoader_H
#define Patternist_AccelTreeResourceLoader_H

#include <QtCore/QEventLoop>
#include <QtNetwork/QNetworkReply>

#include "qabstractxmlreceiver.h"
#include "qacceltree_p.h"
#include "qacceltreebuilder_p.h"
#include "qdeviceresourceloader_p.h"
#include "qnamepool_p.h"
#include "qnetworkaccessdelegator_p.h"
#include "qreportcontext_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

class QIODevice;

namespace QPatternist
{
    class NetworkLoop : public QEventLoop
    {
        Q_OBJECT
    public:
        NetworkLoop() : m_hasReceivedError(false)
        {
        }

    public Q_SLOTS:
        void error(QNetworkReply::NetworkError code)
        {
            Q_UNUSED(code);
            m_hasReceivedError = true;
            exit(1);
        }

        void finished()
        {
            if(m_hasReceivedError)
                exit(1);
            else
                exit(0);
        }
    private:
        bool m_hasReceivedError;
    };

    class Q_AUTOTEST_EXPORT AccelTreeResourceLoader : public DeviceResourceLoader
    {
    public:
        enum ErrorHandling
        {
            FailOnError,        
            ContinueOnError     
        };

        AccelTreeResourceLoader(const NamePool::Ptr &np,
                                const NetworkAccessDelegator::Ptr &networkDelegator, AccelTreeBuilder<true>::Features = AccelTreeBuilder<true>::NoneFeature);

        virtual Item openDocument(const QUrl &uri,
                                  const ReportContext::Ptr &context);
        virtual Item openDocument(QIODevice *source, const QUrl &documentUri,
                                  const ReportContext::Ptr &context);
        virtual SequenceType::Ptr announceDocument(const QUrl &uri, const Usage usageHint);
        virtual bool isDocumentAvailable(const QUrl &uri);

        virtual bool isUnparsedTextAvailable(const QUrl &uri,
                                             const QString &encoding);

        virtual Item openUnparsedText(const QUrl &uri,
                                      const QString &encoding,
                                      const ReportContext::Ptr &context,
                                      const SourceLocationReflection *const where);

        static QNetworkReply *load(const QUrl &uri,
                                   QNetworkAccessManager *const networkManager,
                                   const ReportContext::Ptr &context, ErrorHandling handling = FailOnError);

        static QNetworkReply *load(const QUrl &uri,
                                   const NetworkAccessDelegator::Ptr &networkDelegator,
                                   const ReportContext::Ptr &context, ErrorHandling handling = FailOnError);

        virtual QSet<QUrl> deviceURIs() const;

        virtual void clear(const QUrl &uri);

    private:
        static bool streamToReceiver(QIODevice *const dev,
                                     AccelTreeBuilder<true> *const receiver,
                                     const NamePool::Ptr &np,
                                     const ReportContext::Ptr &context,
                                     const QUrl &uri);
        bool retrieveDocument(const QUrl &uri,
                              const ReportContext::Ptr &context);
        bool retrieveDocument(QIODevice *source, const QUrl &documentUri,
                              const ReportContext::Ptr &context);
        bool retrieveUnparsedText(const QUrl &uri,
                                  const QString &encoding,
                                  const ReportContext::Ptr &context,
                                  const SourceLocationReflection *const where);

        QHash<QUrl, AccelTree::Ptr>             m_loadedDocuments;
        const NamePool::Ptr                     m_namePool;
        const NetworkAccessDelegator::Ptr       m_networkAccessDelegator;
        QHash<QPair<QUrl, QString>, QString>    m_unparsedTexts;
        AccelTreeBuilder<true>::Features        m_features;
    };
}

QT_END_NAMESPACE

QT_END_HEADER

#endif