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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDBus module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <string.h>
#include <QtCore/qvariant.h>
#include <QtCore/qmetaobject.h>
#include "qdbusutil_p.h"
#include "qdbusconnection_p.h"
#include "qdbusmetatype_p.h"
QT_BEGIN_NAMESPACE
bool qDBusCheckAsyncTag(const char *tag)
{
static const char noReplyTag[] = "Q_NOREPLY";
if (!tag || !*tag)
return false;
const char *p = strstr(tag, noReplyTag);
if (p != NULL &&
(p == tag || *(p-1) == ' ') &&
(p[sizeof noReplyTag - 1] == '\0' || p[sizeof noReplyTag - 1] == ' '))
return true;
return false;
}
int qDBusNameToTypeId(const char *name)
{
int id = static_cast<int>( QVariant::nameToType(name) );
if (id == QVariant::UserType)
id = QMetaType::type(name);
return id;
}
// calculates the metatypes for the method
// the slot must have the parameters in the following form:
// - zero or more value or const-ref parameters of any kind
// - zero or one const ref of QDBusMessage
// - zero or more non-const ref parameters
// No parameter may be a template.
// this function returns -1 if the parameters don't match the above form
// this function returns the number of *input* parameters, including the QDBusMessage one if any
// this function does not check the return type, so metaTypes[0] is always 0 and always present
// metaTypes.count() >= retval + 1 in all cases
//
// sig must be the normalised signature for the method
int qDBusParametersForMethod(const QMetaMethod &mm, QList<int>& metaTypes)
{
QDBusMetaTypeId::init();
QList<QByteArray> parameterTypes = mm.parameterTypes();
metaTypes.clear();
metaTypes.append(0); // return type
int inputCount = 0;
bool seenMessage = false;
QList<QByteArray>::ConstIterator it = parameterTypes.constBegin();
QList<QByteArray>::ConstIterator end = parameterTypes.constEnd();
for ( ; it != end; ++it) {
const QByteArray &type = *it;
if (type.endsWith('*')) {
//qWarning("Could not parse the method '%s'", mm.signature());
// pointer?
return -1;
}
if (type.endsWith('&')) {
QByteArray basictype = type;
basictype.truncate(type.length() - 1);
int id = qDBusNameToTypeId(basictype);
if (id == 0) {
//qWarning("Could not parse the method '%s'", mm.signature());
// invalid type in method parameter list
return -1;
} else if (QDBusMetaType::typeToSignature(id) == 0)
return -1;
metaTypes.append( id );
seenMessage = true; // it cannot appear anymore anyways
continue;
}
if (seenMessage) { // && !type.endsWith('&')
//qWarning("Could not parse the method '%s'", mm.signature());
// non-output parameters after message or after output params
return -1; // not allowed
}
int id = qDBusNameToTypeId(type);
if (id == 0) {
//qWarning("Could not parse the method '%s'", mm.signature());
// invalid type in method parameter list
return -1;
}
if (id == QDBusMetaTypeId::message)
seenMessage = true;
else if (QDBusMetaType::typeToSignature(id) == 0)
return -1;
metaTypes.append(id);
++inputCount;
}
return inputCount;
}
QT_END_NAMESPACE
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