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Diffstat (limited to 'qt/qdbusmisc.cpp')
| -rw-r--r-- | qt/qdbusmisc.cpp | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/qt/qdbusmisc.cpp b/qt/qdbusmisc.cpp new file mode 100644 index 00000000..9aaf9f24 --- /dev/null +++ b/qt/qdbusmisc.cpp @@ -0,0 +1,156 @@ +/* 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; +} |