scriptengine.h 3.82 KB
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/**************************************************************************
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**
** This file is part of Qt Creator
**
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** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** Commercial Usage
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**
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** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** If you are unsure which license is appropriate for your use, please
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** contact the sales department at http://qt.nokia.com/contact.
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**
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**************************************************************************/
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#ifndef DEBUGGER_SCRIPTENGINE_H
#define DEBUGGER_SCRIPTENGINE_H

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#include "idebuggerengine.h"

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#include <QtCore/QSharedPointer>
#include <QtCore/QScopedPointer>
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QT_BEGIN_NAMESPACE
class QScriptEngine;
class QScriptValue;
QT_END_NAMESPACE

namespace Debugger {
namespace Internal {

class ScriptAgent;
class WatchData;

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/* A debugger engine for a QScriptEngine implemented using a QScriptEngineAgent.
 * listening on script events. The engine has a special execution model:
 * The script is executed in the foreground, while the debugger runs in
 * processEvents() triggered by QScriptEngine::setProcessEventsInterval().
 * Stopping is emulated by manually calling processEvents() from the debugger engine. */

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class ScriptEngine : public IDebuggerEngine
{
    Q_OBJECT

public:
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    ScriptEngine(DebuggerManager *manager);
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    ~ScriptEngine();

private:
    // IDebuggerEngine implementation
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    void executeStep();
    void executeStepOut();
    void executeNext();
    void executeStepI();
    void executeNextI();
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    void shutdown();
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    void setToolTipExpression(const QPoint &mousePos,
        TextEditor::ITextEditor *editor, int cursorPos);
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    void startDebugger(const DebuggerStartParametersPtr &sp);
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    void exitDebugger();

    void continueInferior();
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    Q_SLOT void runInferior();
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    void interruptInferior();

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    void executeRunToLine(const QString &fileName, int lineNumber);
    void executeRunToFunction(const QString &functionName);
    void executeJumpToLine(const QString &fileName, int lineNumber);
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    void activateFrame(int index);
    void selectThread(int index);

    void attemptBreakpointSynchronization();

    void assignValueInDebugger(const QString &expr, const QString &value);
    void executeDebuggerCommand(const QString & command);

    void loadSymbols(const QString &moduleName);
    void loadAllSymbols();
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    void requestModuleSymbols(const QString &moduleName);
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    void reloadModules();
    void reloadRegisters() {}
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    void reloadSourceFiles() {}
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    void reloadFullStack() {}
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    bool supportsThreads() const { return true; }
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    bool checkForBreakCondition(bool byFunction);
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    void updateWatchData(const WatchData &data);
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    void updateLocals();
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    void updateSubItem(const WatchData &data);
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    Q_SLOT void showDebuggerOutput(int channel, const QString &m);

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private:
    friend class ScriptAgent;

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    bool importExtensions();

    QSharedPointer<QScriptEngine> m_scriptEngine;
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    QString m_scriptContents;
    QString m_scriptFileName;
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    QScopedPointer<ScriptAgent> m_scriptAgent;
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    bool m_stopped;
    bool m_stopOnNextLine;
};

} // namespace Internal
} // namespace Debugger

#endif // DEBUGGER_SCRIPTENGINE_H