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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/

#pragma once

#include "itestparser.h"

#include <qmljs/qmljsdocument.h>
#include <utils/id.h>

#include <QFutureWatcher>
#include <QMap>
#include <QObject>
#include <QTimer>

QT_BEGIN_NAMESPACE
class QThreadPool;
QT_END_NAMESPACE

namespace ProjectExplorer { class Project; }

namespace Autotest {

namespace Internal {

class TestCodeParser : public QObject
{
    Q_OBJECT
public:
    enum State {
        Idle,
        PartialParse,
        FullParse,
        Shutdown
    };

    TestCodeParser();

    void setState(State state);
    State state() const { return m_parserState; }
    bool isParsing() const { return m_parserState == PartialParse || m_parserState == FullParse; }
    void setDirty() { m_dirty = true; }
    void syncTestFrameworks(const QList<ITestParser *> &parsers);
#ifdef WITH_TESTS
    bool furtherParsingExpected() const
    { return m_singleShotScheduled || m_postponedUpdateType != UpdateType::NoUpdate; }
#endif

signals:
    void aboutToPerformFullParse();
    void testParseResultReady(const TestParseResultPtr result);
    void parsingStarted();
    void parsingFinished();
    void parsingFailed();
    void requestRemoval(const Utils::FilePath &filePath);
    void requestRemoveAllFrameworkItems();

public:
    void emitUpdateTestTree(ITestParser *parser = nullptr);
    void updateTestTree(const QSet<ITestParser *> &parsers = {});
    void onCppDocumentUpdated(const CPlusPlus::Document::Ptr &document);
    void onQmlDocumentUpdated(const QmlJS::Document::Ptr &document);
    void onStartupProjectChanged(ProjectExplorer::Project *project);
    void onProjectPartsUpdated(ProjectExplorer::Project *project);
    void aboutToShutdown();

private:
    bool postponed(const Utils::FilePaths &fileList);
    void scanForTests(const Utils::FilePaths &fileList = Utils::FilePaths(),
                      const QList<ITestParser *> &parsers = {});

    // qml files must be handled slightly different
    void onDocumentUpdated(const Utils::FilePath &fileName, bool isQmlFile = false);
    void onTaskStarted(Utils::Id type);
    void onAllTasksFinished(Utils::Id type);
    void onFinished();
    void onPartialParsingFinished();
    void parsePostponedFiles();
    void releaseParserInternals();

    // used internally to indicate a parse that failed due to having triggered a parse for a file that
    // is not (yet) part of the CppModelManager's snapshot
    bool m_parsingHasFailed = false;

    bool m_codeModelParsing = false;
    enum class UpdateType {
        NoUpdate,
        PartialUpdate,
        FullUpdate
    } m_postponedUpdateType = UpdateType::NoUpdate;
    bool m_dirty = false;
    bool m_singleShotScheduled = false;
    bool m_reparseTimerTimedOut = false;
    QSet<Utils::FilePath> m_postponedFiles;
    State m_parserState = Idle;
    QFutureWatcher<TestParseResultPtr> m_futureWatcher;
    QList<ITestParser *> m_testCodeParsers; // ptrs are still owned by TestFrameworkManager
    QTimer m_reparseTimer;
    QSet<ITestParser *> m_updateParsers;
    QThreadPool *m_threadPool = nullptr;
};

} // namespace Internal
} // namespace Autotest