/****************************************************************************
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** Copyright (C) 2019 The Qt Company Ltd.
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**
** This file is part of the QtQml module of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:LGPL$
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** General Public License version 3 as published by the Free Software
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** ensure the GNU Lesser General Public License version 3 requirements
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** 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
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****************************************************************************/

#ifndef QQMLDIRDATA_P_H
#define QQMLDIRDATA_P_H

//
//  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.
//

#include <private/qqmltypeloader_p.h>

QT_BEGIN_NAMESPACE

class Q_AUTOTEST_EXPORT QQmlQmldirData : public QQmlTypeLoader::Blob
{
private:
    friend class QQmlTypeLoader;

    QQmlQmldirData(const QUrl &, QQmlTypeLoader *);

public:
    const QString &content() const;
    QV4::CompiledData::Location importLocation(Blob *blob) const;

    template<typename Callback>
    bool processImports(Blob *blob, const Callback &callback) const
    {
        bool result = true;
        const auto range = m_imports.equal_range(blob);
        for (auto it = range.first; it != range.second; ++it) {
            // Do we need to resolve this import?
            if ((it->import->priority == 0) || (it->import->priority > it->priority)) {
                // This is the (current) best resolution for this import
                if (!callback(it->import))
                    result = false;
                it->import->priority = it->priority;
            }
        }
        return result;
    }

    void setPriority(Blob *, PendingImportPtr, int);

protected:
    void dataReceived(const SourceCodeData &) override;
    void initializeFromCachedUnit(const QQmlPrivate::CachedQmlUnit *) override;

private:
    struct PrioritizedImport {
        PendingImportPtr import;
        int priority = 0;
    };

    QString m_content;
    QMultiHash<Blob *, PrioritizedImport> m_imports;
};

QT_END_NAMESPACE

#endif // QQMLDIRDATA_P_H