/**************************************************************************
**
** This file is part of Qt Creator
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** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
**
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** Software or, alternatively, in accordance with the terms contained in
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** GNU Lesser General Public License Usage
**
** 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
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#ifndef DEBUGGER_ABSTRACT_GDB_ADAPTER
#define DEBUGGER_ABSTRACT_GDB_ADAPTER

#include <QtCore/QObject>
#include <QtCore/QProcess>

#include "gdbengine.h"

namespace Debugger {
namespace Internal {

class GdbEngine;

enum GdbAdapterState 
{
    AdapterNotRunning,
    AdapterStarting,
    AdapterStarted,
    AdapterStartFailed,
    InferiorPreparing,
    InferiorPrepared,
    InferiorPreparationFailed,
    InferiorStarting,
    InferiorStarted,
    InferiorStartFailed,
    InferiorShuttingDown,
    InferiorShutDown,
    InferiorShutdownFailed,
    AdapterShuttingDown,
    //AdapterShutDown,  // use AdapterNotRunning 
    AdapterShutdownFailed,
};

// AbstractGdbAdapter is inherited by PlainGdbAdapter used for local
// debugging and TrkGdbAdapter used for on-device debugging.
// In the PlainGdbAdapter case it's just a wrapper around a QProcess running
// gdb, in the TrkGdbAdapter case it's the interface to the gdb process in
// the whole rfomm/gdb/gdbserver combo.
class AbstractGdbAdapter : public QObject
{
    Q_OBJECT

public:
    AbstractGdbAdapter(GdbEngine *engine, QObject *parent = 0)
        : QObject(parent), m_engine(engine), m_state(AdapterNotRunning)
    {}

    virtual QString errorString() const = 0;
    virtual QByteArray readAllStandardError() = 0;
    virtual QByteArray readAllStandardOutput() = 0;
    virtual qint64 write(const char *data) = 0;
    virtual void setWorkingDirectory(const QString &dir) = 0;
    virtual void setEnvironment(const QStringList &env) = 0;
    virtual bool isAdapter() const = 0;

    virtual void startAdapter(const DebuggerStartParametersPtr &sp) = 0;
    virtual void prepareInferior() = 0;
    virtual void startInferior() = 0;
    virtual void interruptInferior() = 0;
    virtual void shutdown() = 0;

signals:
    void adapterStarted();
    void adapterStartFailed(const QString &msg);
    void adapterShutDown();
    void adapterShutdownFailed(const QString &msg);
    void adapterCrashed();

    void inferiorPrepared();
    void inferiorPreparationFailed(const QString &msg);
    void inferiorStarted();
    void inferiorStartFailed(const QString &msg);
    void inferiorShutDown();
    void inferiorShutdownFailed(const QString &msg);
    
    void inferiorPidChanged(qint64 pid);

    void error(QProcess::ProcessError);
    void readyReadStandardOutput();
    void readyReadStandardError();

public:
    virtual GdbAdapterState state() const { return m_state; }
protected:
    virtual void setState(GdbAdapterState state) { m_state = state; }

    GdbEngine * const m_engine;
    GdbAdapterState m_state;
};

} // namespace Internal
} // namespace Debugger

#endif // DEBUGGER_ABSTRACT_GDB_ADAPTER