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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** No Commercial Usage
**
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#ifndef IINTERFACEPOINTER_H
#define IINTERFACEPOINTER_H
#include "common.h"
/* AutoPtr for a IDebugInterface */
template <class IInterface>
class IInterfacePointer
{
explicit IInterfacePointer(const IInterfacePointer&);
IInterfacePointer& operator=(const IInterfacePointer&);
public:
inline IInterfacePointer() : m_instance(0), m_hr(S_OK) {}
// IDebugClient4 does not inherit IDebugClient.
inline explicit IInterfacePointer(IDebugClient *client) : m_instance(0), m_hr(S_OK) { create(client); }
inline explicit IInterfacePointer(CIDebugClient *client) : m_instance(0), m_hr(S_OK) { create(client); }
inline ~IInterfacePointer() { release(); }
inline IInterface *operator->() const { return m_instance; }
inline IInterface *data() const { return m_instance; }
inline bool isNull() const { return m_instance == 0; }
inline operator bool() const { return !isNull(); }
inline HRESULT hr() const { return m_hr; }
// This is for creating a IDebugClient from scratch. Not matches by a constructor,
// unfortunately
inline bool create() {
release();
m_hr = DebugCreate(__uuidof(IInterface), (void **)&m_instance);
return m_hr == S_OK;
}
inline bool create(IDebugClient *client) {
release();
m_hr = client->QueryInterface(__uuidof(IInterface), (void **)&m_instance);
return m_hr == S_OK;
}
inline bool create(CIDebugClient *client) {
release();
m_hr = client->QueryInterface(__uuidof(IInterface), (void **)&m_instance);
return m_hr == S_OK;
}
private:
void release() {
if (m_instance) {
m_instance->Release();
m_instance = 0;
m_hr = S_OK;
}
}
IInterface *m_instance;
HRESULT m_hr;
};
#endif // IINTERFACEPOINTER_H
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