qqmlpreviewblacklist.h

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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:significant
 
#ifndef QQMLPREVIEWBLACKLIST_H
#define QQMLPREVIEWBLACKLIST_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 <QtCore/qhash.h>
#include <QtCore/qchar.h>
#include <QtCore/qstring.h>
#include <algorithm>
 
QT_BEGIN_NAMESPACE
 
class QQmlPreviewBlacklist
{
public:
    void blacklist(const QString &path);
    void whitelist(const QString &path);
    bool isBlacklisted(const QString &path) const;
    void clear();
 
private:
    class Node {
    public:
        enum PrefixResult {
            MatchedLeaf,
            MatchedBranch,
            Unmatched,
        };
 
        Node();
        Node(const Node &other);
        Node(Node &&other) noexcept;
 
        ~Node();
 
        Node &operator=(const Node &other);
        Node &operator=(Node &&other) noexcept;
 
        void split(QString::iterator it, QString::iterator end);
        void insert(const QString &path, int offset);
        void remove(const QString &path, int offset);
        PrefixResult findPrefix(const QString &path, int offset) const;
 
    private:
        Node(const QString &mine, const QHash<QChar, Node *> &next = QHash<QChar, Node *>(),
             bool isLeaf = true);
 
        QString m_mine;
        QHash<QChar, Node *> m_next;
        bool m_isLeaf = false;
    };
 
    Node m_root;
};
 
QT_END_NAMESPACE
 
#endif // QQMLPREVIEWBLACKLIST_H