1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Copyright (C) 2014 Olivier Goffart <ogoffart@woboq.com>
5** Contact: https://www.qt.io/licensing/
6**
7** This file is part of the QtCore module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial License Usage
11** Licensees holding valid commercial Qt licenses may use this file in
12** accordance with the commercial license agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and The Qt Company. For licensing terms
15** and conditions see https://www.qt.io/terms-conditions. For further
16** information use the contact form at https://www.qt.io/contact-us.
17**
18** GNU Lesser General Public License Usage
19** Alternatively, this file may be used under the terms of the GNU Lesser
20** General Public License version 3 as published by the Free Software
21** Foundation and appearing in the file LICENSE.LGPL3 included in the
22** packaging of this file. Please review the following information to
23** ensure the GNU Lesser General Public License version 3 requirements
24** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
25**
26** GNU General Public License Usage
27** Alternatively, this file may be used under the terms of the GNU
28** General Public License version 2.0 or (at your option) the GNU General
29** Public license version 3 or any later version approved by the KDE Free
30** Qt Foundation. The licenses are as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
32** included in the packaging of this file. Please review the following
33** information to ensure the GNU General Public License requirements will
34** be met: https://www.gnu.org/licenses/gpl-2.0.html and
35** https://www.gnu.org/licenses/gpl-3.0.html.
36**
37** $QT_END_LICENSE$
38**
39****************************************************************************/
40
41#ifndef QMETAOBJECT_P_H
42#define QMETAOBJECT_P_H
43
44//
45// W A R N I N G
46// -------------
47//
48// This file is not part of the Qt API. It exists for the convenience
49// of moc. This header file may change from version to version without notice,
50// or even be removed.
51//
52// We mean it.
53//
54
55#include <QtCore/qglobal.h>
56#include <QtCore/qobjectdefs.h>
57#include <QtCore/qmutex.h>
58#ifndef QT_NO_QOBJECT
59#include <private/qobject_p.h> // For QObjectPrivate::Connection
60#endif
61#include <QtCore/qvarlengtharray.h>
62
63QT_BEGIN_NAMESPACE
64// ### TODO Qt6: add a proper namespace with Q_NAMESPACE and use scoped enums
65// A namespace and scoped are needed to avoid enum clashes
66
67enum PropertyFlags {
68 Invalid = 0x00000000,
69 Readable = 0x00000001,
70 Writable = 0x00000002,
71 Resettable = 0x00000004,
72 EnumOrFlag = 0x00000008,
73 StdCppSet = 0x00000100,
74// Override = 0x00000200,
75 Constant = 0x00000400,
76 Final = 0x00000800,
77 Designable = 0x00001000,
78 ResolveDesignable = 0x00002000,
79 Scriptable = 0x00004000,
80 ResolveScriptable = 0x00008000,
81 Stored = 0x00010000,
82 ResolveStored = 0x00020000,
83 Editable = 0x00040000,
84 ResolveEditable = 0x00080000,
85 User = 0x00100000,
86 ResolveUser = 0x00200000,
87 Notify = 0x00400000,
88 Revisioned = 0x00800000,
89 Required = 0x01000000,
90};
91
92enum MethodFlags {
93 AccessPrivate = 0x00,
94 AccessProtected = 0x01,
95 AccessPublic = 0x02,
96 AccessMask = 0x03, //mask
97
98 MethodMethod = 0x00,
99 MethodSignal = 0x04,
100 MethodSlot = 0x08,
101 MethodConstructor = 0x0c,
102 MethodTypeMask = 0x0c,
103
104 MethodCompatibility = 0x10,
105 MethodCloned = 0x20,
106 MethodScriptable = 0x40,
107 MethodRevisioned = 0x80
108};
109
110enum MetaObjectFlags { // keep it in sync with QMetaObjectBuilder::MetaObjectFlag enum
111 DynamicMetaObject = 0x01,
112 RequiresVariantMetaObject = 0x02,
113 PropertyAccessInStaticMetaCall = 0x04 // since Qt 5.5, property code is in the static metacall
114};
115
116enum MetaDataFlags {
117 IsUnresolvedType = 0x80000000,
118 TypeNameIndexMask = 0x7FFFFFFF,
119 IsUnresolvedSignal = 0x70000000
120};
121
122enum EnumFlags {
123 EnumIsFlag = 0x1,
124 EnumIsScoped = 0x2
125};
126
127extern int qMetaTypeTypeInternal(const char *);
128
129class QArgumentType
130{
131public:
132 QArgumentType(int type)
133 : _type(type)
134 {}
135 QArgumentType(const QByteArray &name)
136 : _type(qMetaTypeTypeInternal(name.constData())), _name(name)
137 {}
138 QArgumentType()
139 : _type(0)
140 {}
141 int type() const
142 { return _type; }
143 QByteArray name() const
144 {
145 if (_type && _name.isEmpty())
146 const_cast<QArgumentType *>(this)->_name = QMetaType::typeName(type: _type);
147 return _name;
148 }
149 bool operator==(const QArgumentType &other) const
150 {
151 if (_type && other._type)
152 return _type == other._type;
153 else
154 return name() == other.name();
155 }
156 bool operator!=(const QArgumentType &other) const
157 {
158 if (_type && other._type)
159 return _type != other._type;
160 else
161 return name() != other.name();
162 }
163
164private:
165 int _type;
166 QByteArray _name;
167};
168Q_DECLARE_TYPEINFO(QArgumentType, Q_MOVABLE_TYPE);
169
170typedef QVarLengthArray<QArgumentType, 10> QArgumentTypeArray;
171
172class QMetaMethodPrivate;
173
174struct QMetaObjectPrivate
175{
176 // revision 7 is Qt 5.0 everything lower is not supported
177 // revision 8 is Qt 5.12: It adds the enum name to QMetaEnum
178 enum { OutputRevision = 8 }; // Used by moc, qmetaobjectbuilder and qdbus
179
180 int revision;
181 int className;
182 int classInfoCount, classInfoData;
183 int methodCount, methodData;
184 int propertyCount, propertyData;
185 int enumeratorCount, enumeratorData;
186 int constructorCount, constructorData;
187 int flags;
188 int signalCount;
189
190 static inline const QMetaObjectPrivate *get(const QMetaObject *metaobject)
191 { return reinterpret_cast<const QMetaObjectPrivate*>(metaobject->d.data); }
192
193 static int originalClone(const QMetaObject *obj, int local_method_index);
194
195 static QByteArray decodeMethodSignature(const char *signature,
196 QArgumentTypeArray &types);
197 static int indexOfSignalRelative(const QMetaObject **baseObject,
198 const QByteArray &name, int argc,
199 const QArgumentType *types);
200 static int indexOfSlotRelative(const QMetaObject **m,
201 const QByteArray &name, int argc,
202 const QArgumentType *types);
203 static int indexOfSignal(const QMetaObject *m, const QByteArray &name,
204 int argc, const QArgumentType *types);
205 static int indexOfSlot(const QMetaObject *m, const QByteArray &name,
206 int argc, const QArgumentType *types);
207 static int indexOfMethod(const QMetaObject *m, const QByteArray &name,
208 int argc, const QArgumentType *types);
209 static int indexOfConstructor(const QMetaObject *m, const QByteArray &name,
210 int argc, const QArgumentType *types);
211 Q_CORE_EXPORT static QMetaMethod signal(const QMetaObject *m, int signal_index);
212 static inline int signalOffset(const QMetaObject *m) {
213 Q_ASSERT(m != nullptr);
214 int offset = 0;
215 for (m = m->d.superdata; m; m = m->d.superdata)
216 offset += reinterpret_cast<const QMetaObjectPrivate*>(m->d.data)->signalCount;
217 return offset;
218 }
219 Q_CORE_EXPORT static int absoluteSignalCount(const QMetaObject *m);
220 Q_CORE_EXPORT static int signalIndex(const QMetaMethod &m);
221 static bool checkConnectArgs(int signalArgc, const QArgumentType *signalTypes,
222 int methodArgc, const QArgumentType *methodTypes);
223 static bool checkConnectArgs(const QMetaMethodPrivate *signal,
224 const QMetaMethodPrivate *method);
225
226 static QList<QByteArray> parameterTypeNamesFromSignature(const char *signature);
227
228#ifndef QT_NO_QOBJECT
229 //defined in qobject.cpp
230 enum DisconnectType { DisconnectAll, DisconnectOne };
231 static void memberIndexes(const QObject *obj, const QMetaMethod &member,
232 int *signalIndex, int *methodIndex);
233 static QObjectPrivate::Connection *connect(const QObject *sender, int signal_index,
234 const QMetaObject *smeta,
235 const QObject *receiver, int method_index_relative,
236 const QMetaObject *rmeta = nullptr,
237 int type = 0, int *types = nullptr);
238 static bool disconnect(const QObject *sender, int signal_index,
239 const QMetaObject *smeta,
240 const QObject *receiver, int method_index, void **slot,
241 DisconnectType = DisconnectAll);
242 static inline bool disconnectHelper(QObjectPrivate::ConnectionData *connections, int signalIndex,
243 const QObject *receiver, int method_index, void **slot,
244 QBasicMutex *senderMutex, DisconnectType = DisconnectAll);
245#endif
246};
247
248// For meta-object generators
249
250enum { MetaObjectPrivateFieldCount = sizeof(QMetaObjectPrivate) / sizeof(int) };
251
252#ifndef UTILS_H
253// mirrored in moc's utils.h
254static inline bool is_ident_char(char s)
255{
256 return ((s >= 'a' && s <= 'z')
257 || (s >= 'A' && s <= 'Z')
258 || (s >= '0' && s <= '9')
259 || s == '_'
260 );
261}
262
263static inline bool is_space(char s)
264{
265 return (s == ' ' || s == '\t');
266}
267#endif
268
269/*
270 This function is shared with moc.cpp. The implementation lives in qmetaobject_moc_p.h, which
271 should be included where needed. The declaration here is not used to avoid warnings from
272 the compiler about unused functions.
273
274static QByteArray normalizeTypeInternal(const char *t, const char *e, bool fixScope = false, bool adjustConst = true);
275*/
276
277QT_END_NAMESPACE
278
279#endif
280
281

source code of qtbase/src/corelib/kernel/qmetaobject_p.h