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/* qdbusmisc.cpp Miscellaneous routines that didn't fit anywhere else
*
* Copyright (C) 2006 Trolltech AS. All rights reserved.
* Author: Thiago Macieira <thiago.macieira@trolltech.com>
*
* Licensed under the Academic Free License version 2.1
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include <string.h>
#include <QtCore/qvariant.h>
#include <QtCore/qmetaobject.h>
#include "qdbusconnection_p.h"
#include "qdbustypehelper_p.h"
bool qDBusCheckAsyncTag(const char *tag)
{
if (!tag || !*tag)
return false;
const char *p = strstr(tag, "async");
if (p != NULL &&
(p == tag || *(p-1) == ' ') &&
(p[5] == '\0' || p[5] == ' '))
return true;
p = strstr(tag, "Q_ASYNC");
if (p != NULL &&
(p == tag || *(p-1) == ' ') &&
(p[7] == '\0' || p[7] == ' '))
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);
switch (id) {
case QVariant::Bool:
case QVariant::Int:
case QVariant::UInt:
case QVariant::Char:
case QMetaType::Short:
case QMetaType::UShort:
case QMetaType::UChar:
case QVariant::LongLong:
case QVariant::ULongLong:
case QVariant::Double:
case QVariant::String:
case QVariant::Date:
case QVariant::Time:
case QVariant::DateTime:
case QVariant::Map:
case QVariant::StringList:
case QVariant::ByteArray:
case QVariant::List:
return id;
default:
if (id == QDBusConnectionPrivate::registerMessageMetaType() ||
id == QDBusTypeHelper<QVariant>::id() ||
id == QDBusTypeHelper<bool>::listId() ||
id == QDBusTypeHelper<short>::listId() ||
id == QDBusTypeHelper<ushort>::listId() ||
id == QDBusTypeHelper<int>::listId() ||
id == QDBusTypeHelper<qlonglong>::listId() ||
id == QDBusTypeHelper<qulonglong>::listId() ||
id == QDBusTypeHelper<double>::listId())
return id;
return 0; // invalid
}
}
// 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)
{
QList<QByteArray> parameterTypes = mm.parameterTypes();
metaTypes.clear();
metaTypes.append(0); // return type
int inputCount = 0;
bool seenMessage = false;
foreach (QByteArray type, parameterTypes) {
if (type.endsWith('*')) {
//qWarning("Could not parse the method '%s'", mm.signature());
// pointer?
return -1;
}
if (type.endsWith('&')) {
type.truncate(type.length() - 1);
int id = qDBusNameToTypeId(type);
if (id == 0) {
//qWarning("Could not parse the method '%s'", mm.signature());
// invalid type in method parameter list
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;
}
metaTypes.append(id);
++inputCount;
if (id == QDBusConnectionPrivate::registerMessageMetaType())
seenMessage = true;
}
return inputCount;
}
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