1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** 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
|
