Bug Summary

File:usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs.h
Warning:line 319, column 9
Potential memory leak

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name workspace_state.cpp -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -fhalf-no-semantic-interposition -fno-delete-null-pointer-checks -mframe-pointer=all -relaxed-aliasing -fmath-errno -ffp-contract=on -fno-rounding-math -ffloat16-excess-precision=fast -fbfloat16-excess-precision=fast -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/builds/wireshark/wireshark/build -fcoverage-compilation-dir=/builds/wireshark/wireshark/build -resource-dir /usr/lib/llvm-21/lib/clang/21 -isystem /usr/include/glib-2.0 -isystem /usr/lib/x86_64-linux-gnu/glib-2.0/include -isystem /builds/wireshark/wireshark/build/ui/qt -isystem /builds/wireshark/wireshark/ui/qt -isystem /usr/include/x86_64-linux-gnu/qt6/QtWidgets -isystem /usr/include/x86_64-linux-gnu/qt6 -isystem /usr/include/x86_64-linux-gnu/qt6/QtCore -isystem /usr/lib/x86_64-linux-gnu/qt6/mkspecs/linux-g++ -isystem /usr/include/x86_64-linux-gnu/qt6/QtGui -isystem /usr/include/x86_64-linux-gnu/qt6/QtCore5Compat -isystem /usr/include/x86_64-linux-gnu/qt6/QtConcurrent -isystem /usr/include/x86_64-linux-gnu/qt6/QtPrintSupport -isystem /usr/include/x86_64-linux-gnu/qt6/QtMultimedia -isystem /usr/include/x86_64-linux-gnu/qt6/QtNetwork -isystem /usr/include/x86_64-linux-gnu/qt6/QtDBus -D G_DISABLE_DEPRECATED -D G_DISABLE_SINGLE_INCLUDES -D QT_CONCURRENT_LIB -D QT_CORE5COMPAT_LIB -D QT_CORE_LIB -D QT_DBUS_LIB -D QT_GUI_LIB -D QT_MULTIMEDIA_LIB -D QT_NETWORK_LIB -D QT_PRINTSUPPORT_LIB -D QT_WIDGETS_LIB -D WS_DEBUG -D WS_DEBUG_UTF_8 -I /builds/wireshark/wireshark/build/ui/qt/qtui_autogen/include -I /builds/wireshark/wireshark/build -I /builds/wireshark/wireshark -I /builds/wireshark/wireshark/include -D _GLIBCXX_ASSERTIONS -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../include/c++/14 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../include/x86_64-linux-gnu/c++/14 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../include/c++/14/backward -internal-isystem /usr/lib/llvm-21/lib/clang/21/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fmacro-prefix-map=/builds/wireshark/wireshark/= -fmacro-prefix-map=/builds/wireshark/wireshark/build/= -fmacro-prefix-map=../= -Wno-format-nonliteral -std=c++17 -fdeprecated-macro -ferror-limit 19 -fwrapv -fwrapv-pointer -fstrict-flex-arrays=3 -stack-protector 2 -fstack-clash-protection -fcf-protection=full -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcxx-exceptions -fexceptions -fcolor-diagnostics -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /builds/wireshark/wireshark/sbout/2026-03-03-100346-3621-1 -x c++ /builds/wireshark/wireshark/ui/qt/utils/workspace_state.cpp

/builds/wireshark/wireshark/ui/qt/utils/workspace_state.cpp

→
1/* workspace_state.cpp
2 *
3 * Wireshark - Network traffic analyzer
4 * By Gerald Combs <gerald@wireshark.org>
5 * Copyright 1998 Gerald Combs
6 *
7 * SPDX-License-Identifier: GPL-2.0-or-later
8 */
9
10#include "config.h"
11
12#include "workspace_state.h"
13
14#include <algorithm>
15#include <QFile>
16#include <QTextStream>
17#include <QDir>
18#include <QRegularExpression>
19#include <QtConcurrent>
20#include <QThreadPool>
21
22#include <wsutil/filesystem.h>
23#include <app/application_flavor.h>
24
25#include <ui/qt/utils/qt_ui_utils.h>
26#include <ui/recent.h>
27#include <epan/prefs.h>
28
29WorkspaceState::WorkspaceState(QObject *parent)
30 : QObject(parent)
31{
32}
33
34WorkspaceState::~WorkspaceState()
35{
36}
37
38WorkspaceState* WorkspaceState::instance()
39{
40 // Meyer's Singleton - thread-safe in C++11 and later
41 static WorkspaceState* instance_ = new WorkspaceState();
42 return instance_;
43}
44
45QString WorkspaceState::recentCommonFilePath() const
46{
47 // recent_common is NOT profile-specific (from_profile = false)
48 char *rf_path = get_persconffile_path(
49 RECENT_COMMON_FILE_NAME,
50 false, // from_profile = false
51 application_configuration_environment_prefix()
52 );
53
54 QString path = QString::fromUtf8(rf_path);
55 g_free(rf_path);
56
57 return path;
58}
59
60QString WorkspaceState::recentProfileFilePath() const
61{
62 // recent is profile-specific (from_profile = true)
63 char *rf_path = get_persconffile_path(
64 RECENT_PROFILE_FILE_NAME,
65 true, // from_profile = true
66 application_configuration_environment_prefix()
67 );
68
69 QString path = QString::fromUtf8(rf_path);
70 g_free(rf_path);
71
72 return path;
73}
74
75bool WorkspaceState::parseRecentFile(const QString &filePath,
76 std::function<void(const QString &key, const QString &value)> handler)
77{
78 QFile file(filePath);
79 if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
80 return false;
81 }
82
83 QTextStream in(&file);
84 // Match: key: value (with optional whitespace)
85 static const QRegularExpression keyValueRe(QStringLiteral("^([^:]+):\\s*(.*)$")(QString(QtPrivate::qMakeStringPrivate(u"" "^([^:]+):\\s*(.*)$"
))));
86
87 while (!in.atEnd()) {
88 QString line = in.readLine();
89
90 // Skip empty lines and comments
91 if (line.isEmpty() || line.startsWith('#')) {
92 continue;
93 }
94
95 QRegularExpressionMatch match = keyValueRe.match(line);
96 if (match.hasMatch()) {
97 QString key = match.captured(1).trimmed();
98 QString value = match.captured(2);
99 handler(key, value);
100 }
101 }
102
103 file.close();
104 return true;
105}
106
107bool WorkspaceState::loadCommonState(QString *errorPath, int *errorCode)
108{
109 QString filePath = recentCommonFilePath();
110
111 QFile file(filePath);
112 if (!file.exists()) {
113 // File doesn't exist yet - not an error, just no state to load
114 return true;
115 }
116
117 if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
118 if (errorPath) *errorPath = filePath;
119 if (errorCode) *errorCode = errno(*__errno_location ());
120 return false;
121 }
122 file.close();
123
124 // Clear existing state before loading
125 QList<RecentFileInfo> newFileList;
126
127 bool success = parseRecentFile(filePath, [&newFileList](const QString &key, const QString &value) {
128 if (key == KEY_CAPTURE_FILE) {
129 // Recent files are stored oldest first, newest last
130 // We append to maintain that order
131 if (!value.isEmpty()) {
132 RecentFileInfo info;
133 info.size = 0;
134 info.accessible = false;
135 info.filename = value;
136 newFileList.append(info);
137 }
138 }
139 // Future: handle other keys here
140 // else if (key == KEY_DISPLAY_FILTER) { ... }
141 });
142
143 if (success) {
144 recent_capture_files_.clear();
145 recent_capture_files_.append(newFileList);
146
147 // Queue async status checks for all loaded files
148 for (const RecentFileInfo &info : newFileList) {
149 queueFileStatusCheck(info.filename);
150 }
151
152 emit stateLoaded();
153 }
154
155 return success;
156}
157
158const QList<RecentFileInfo>& WorkspaceState::recentCaptureFiles() const
159{
160 return recent_capture_files_;
161}
162
163QStringList WorkspaceState::recentCaptureFilenames() const
164{
165 QStringList filenames;
166
167 for (const RecentFileInfo &info : recent_capture_files_) {
168 filenames.append(info.filename);
169 }
170 return filenames;
171}
172
173void WorkspaceState::addRecentCaptureFile(const QString &filePath)
174{
175 if (filePath.isEmpty()) {
176 return;
177 }
178
179 // Remove existing entry if present (Qt5-compatible approach)
180 auto matchesPath = [&filePath](const RecentFileInfo &info) {
181 return filePathsMatch(info.filename, filePath);
182 };
183 recent_capture_files_.erase(
184 std::remove_if(recent_capture_files_.begin(), recent_capture_files_.end(), matchesPath),
185 recent_capture_files_.end());
186
187 // Add to end (newest last, matching the file format)
188 RecentFileInfo info;
189 info.size = 0;
190 info.accessible = false;
191 info.filename = filePath;
192 recent_capture_files_.append(info);
193
194 // Trim to max size (remove oldest = front of list)
195 int maxRecentFiles = static_cast<int>(prefs.gui_recent_files_count_max);
196 if (recent_capture_files_.size() > maxRecentFiles) {
197 recent_capture_files_ = recent_capture_files_.mid(recent_capture_files_.size() - maxRecentFiles);
198 }
199
200 // Queue async status check for the newly added file
201 queueFileStatusCheck(filePath);
202
203 emit recentCaptureFilesChanged();
204 write_recent(); // Persist immediately
205}
206
207void WorkspaceState::removeRecentCaptureFile(const QString &filePath)
208{
209 // Qt5-compatible approach using std::remove_if
210 auto matchesPath = [&filePath](const RecentFileInfo &info) {
211 return filePathsMatch(info.filename, filePath);
212 };
213 auto originalSize = recent_capture_files_.size();
214 auto newEnd = std::remove_if(recent_capture_files_.begin(), recent_capture_files_.end(), matchesPath);
215 recent_capture_files_.erase(newEnd, recent_capture_files_.end());
216
217 if (recent_capture_files_.size() < originalSize) {
218 emit recentCaptureFilesChanged();
219 write_recent(); // Persist immediately
220 }
221}
222
223void WorkspaceState::clearRecentCaptureFiles()
224{
225 if (!recent_capture_files_.isEmpty()) {
226 recent_capture_files_.clear();
227 emit recentCaptureFilesChanged();
228 write_recent(); // Persist immediately
229 }
230}
231
232void WorkspaceState::queueFileStatusCheck(const QString &filename)
233{
234 // Force deep copy for thread safety
235 QString filenameCopy = QString::fromStdU16String(filename.toStdU16String());
236
237 QThreadPool::globalInstance()->start([this, filenameCopy]() {
238 QFileInfo fileInfo(filenameCopy);
239 qint64 size = 0;
240 bool accessible = false;
241
242 if (fileInfo.isFile() && fileInfo.isReadable()) {
1
Assuming the condition is false
→
243 size = fileInfo.size();
244 accessible = true;
245 }
246
247 // Queue the result back to the main thread
248 QMetaObject::invokeMethod(this, [this, filenameCopy, size, accessible]() {
2
←
Calling 'QMetaObject::invokeMethod'
→
249 onFileStatusChecked(filenameCopy, size, accessible);
250 }, Qt::QueuedConnection);
251 });
252}
253
254void WorkspaceState::onFileStatusChecked(const QString &filename, qint64 size, bool accessible)
255{
256 for (RecentFileInfo &info : recent_capture_files_) {
257 if (filePathsMatch(info.filename, filename)) {
258 if (info.size != size || info.accessible != accessible) {
259 info.size = size;
260 info.accessible = accessible;
261 emit recentFileStatusChanged(filename);
262 }
263 break;
264 }
265 }
266}
←

/usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs.h

1// Copyright (C) 2022 The Qt Company Ltd.
2// Copyright (C) 2019 Intel Corporation.
3// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
4
5#ifndef QOBJECTDEFS_H
6#define QOBJECTDEFS_H
7
8#if defined(__OBJC__) && !defined(__cplusplus201703L)
9# warning "File built in Objective-C mode (.m), but using Qt requires Objective-C++ (.mm)"
10#endif
11
12#include <QtCore/qnamespace.h>
13#include <QtCore/qobjectdefs_impl.h>
14#include <QtCore/qtmetamacros.h>
15
16QT_BEGIN_NAMESPACE
17
18class QByteArray;
19struct QArrayData;
20
21class QString;
22
23#ifndef QT_NO_META_MACROS
24// macro for onaming members
25#ifdef METHOD
26#undef METHOD
27#endif
28#ifdef SLOT
29#undef SLOT
30#endif
31#ifdef SIGNAL
32#undef SIGNAL
33#endif
34#endif // QT_NO_META_MACROS
35
36Q_CORE_EXPORT__attribute__((visibility("default"))) const char *qFlagLocation(const char *method);
37
38#ifndef QT_NO_META_MACROS
39# define QMETHOD_CODE0 0 // member type codes
40# define QSLOT_CODE1 1
41# define QSIGNAL_CODE2 2
42# define QT_PREFIX_CODE(code, a)"code" "a" QT_STRINGIFY(code)"code" #a
43# define QT_STRINGIFY_METHOD(a)"0" "a" QT_PREFIX_CODE(QMETHOD_CODE, a)"0" "a"
44# define QT_STRINGIFY_SLOT(a)"1" "a" QT_PREFIX_CODE(QSLOT_CODE, a)"1" "a"
45# define QT_STRINGIFY_SIGNAL(a)"2" "a" QT_PREFIX_CODE(QSIGNAL_CODE, a)"2" "a"
46# ifndef QT_NO_DEBUG
47# define QLOCATION"\0" "/usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs.h"
":" "47" "\0" __FILE__"/usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs.h" ":" QT_STRINGIFY(__LINE__)"47"
48# ifndef QT_NO_KEYWORDS
49# define METHOD(a)qFlagLocation("0" "a" "\0" "/usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs.h"
":" "49") qFlagLocation(QT_STRINGIFY_METHOD(a)"0" "a" QLOCATION"\0" "/usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs.h"
":" "49")
50# endif
51# define SLOT(a)qFlagLocation("1" "a" "\0" "/usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs.h"
":" "51") qFlagLocation(QT_STRINGIFY_SLOT(a)"1" "a" QLOCATION"\0" "/usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs.h"
":" "51")
52# define SIGNAL(a)qFlagLocation("2" "a" "\0" "/usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs.h"
":" "52") qFlagLocation(QT_STRINGIFY_SIGNAL(a)"2" "a" QLOCATION"\0" "/usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs.h"
":" "52")
53# else
54# ifndef QT_NO_KEYWORDS
55# define METHOD(a)qFlagLocation("0" "a" "\0" "/usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs.h"
":" "55") QT_STRINGIFY_METHOD(a)"0" "a"
56# endif
57# define SLOT(a)qFlagLocation("1" "a" "\0" "/usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs.h"
":" "57") QT_STRINGIFY_SLOT(a)"1" "a"
58# define SIGNAL(a)qFlagLocation("2" "a" "\0" "/usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs.h"
":" "58") QT_STRINGIFY_SIGNAL(a)"2" "a"
59# endif
60#endif // QT_NO_META_MACROS
61
62#define Q_ARG(type, data)QArgument<type >("type", data) QArgument<type >(#type, data)
63#define Q_RETURN_ARG(type, data)QReturnArgument<type >("type", data) QReturnArgument<type >(#type, data)
64
65class QObject;
66class QMetaMethod;
67class QMetaEnum;
68class QMetaProperty;
69class QMetaClassInfo;
70
71namespace QtPrivate {
72class QMetaTypeInterface;
73}
74
75struct QMethodRawArguments
76{
77 void **arguments;
78};
79
80class Q_CORE_EXPORT__attribute__((visibility("default"))) QGenericArgument
81{
82public:
83 inline QGenericArgument(const char *aName = nullptr, const void *aData = nullptr)
84 : _data(aData), _name(aName) {}
85 inline void *data() const { return const_cast<void *>(_data); }
86 inline const char *name() const { return _name; }
87
88private:
89 const void *_data;
90 const char *_name;
91};
92
93class Q_CORE_EXPORT__attribute__((visibility("default"))) QGenericReturnArgument: public QGenericArgument
94{
95public:
96 inline QGenericReturnArgument(const char *aName = nullptr, void *aData = nullptr)
97 : QGenericArgument(aName, aData)
98 {}
99};
100
101template <class T>
102class QArgument: public QGenericArgument
103{
104public:
105 inline QArgument(const char *aName, const T &aData)
106 : QGenericArgument(aName, static_cast<const void *>(&aData))
107 {}
108};
109template <class T>
110class QArgument<T &>: public QGenericArgument
111{
112public:
113 inline QArgument(const char *aName, T &aData)
114 : QGenericArgument(aName, static_cast<const void *>(&aData))
115 {}
116};
117
118
119template <typename T>
120class QReturnArgument: public QGenericReturnArgument
121{
122public:
123 inline QReturnArgument(const char *aName, T &aData)
124 : QGenericReturnArgument(aName, static_cast<void *>(&aData))
125 {}
126};
127
128struct Q_CORE_EXPORT__attribute__((visibility("default"))) QMetaObject
129{
130 class Connection;
131 const char *className() const;
132 const QMetaObject *superClass() const;
133
134 bool inherits(const QMetaObject *metaObject) const noexcept;
135 QObject *cast(QObject *obj) const
136 { return const_cast<QObject *>(cast(const_cast<const QObject *>(obj))); }
137 const QObject *cast(const QObject *obj) const;
138
139#if !defined(QT_NO_TRANSLATION) || defined(Q_CLANG_QDOC)
140 QString tr(const char *s, const char *c, int n = -1) const;
141#endif // QT_NO_TRANSLATION
142
143 QMetaType metaType() const;
144
145 int methodOffset() const;
146 int enumeratorOffset() const;
147 int propertyOffset() const;
148 int classInfoOffset() const;
149
150 int constructorCount() const;
151 int methodCount() const;
152 int enumeratorCount() const;
153 int propertyCount() const;
154 int classInfoCount() const;
155
156 int indexOfConstructor(const char *constructor) const;
157 int indexOfMethod(const char *method) const;
158 int indexOfSignal(const char *signal) const;
159 int indexOfSlot(const char *slot) const;
160 int indexOfEnumerator(const char *name) const;
161 int indexOfProperty(const char *name) const;
162 int indexOfClassInfo(const char *name) const;
163
164 QMetaMethod constructor(int index) const;
165 QMetaMethod method(int index) const;
166 QMetaEnum enumerator(int index) const;
167 QMetaProperty property(int index) const;
168 QMetaClassInfo classInfo(int index) const;
169 QMetaProperty userProperty() const;
170
171 static bool checkConnectArgs(const char *signal, const char *method);
172 static bool checkConnectArgs(const QMetaMethod &signal,
173 const QMetaMethod &method);
174 static QByteArray normalizedSignature(const char *method);
175 static QByteArray normalizedType(const char *type);
176
177 // internal index-based connect
178 static Connection connect(const QObject *sender, int signal_index,
179 const QObject *receiver, int method_index,
180 int type = 0, int *types = nullptr);
181 // internal index-based disconnect
182 static bool disconnect(const QObject *sender, int signal_index,
183 const QObject *receiver, int method_index);
184 static bool disconnectOne(const QObject *sender, int signal_index,
185 const QObject *receiver, int method_index);
186 // internal slot-name based connect
187 static void connectSlotsByName(QObject *o);
188
189 // internal index-based signal activation
190 static void activate(QObject *sender, int signal_index, void **argv);
191 static void activate(QObject *sender, const QMetaObject *, int local_signal_index, void **argv);
192 static void activate(QObject *sender, int signal_offset, int local_signal_index, void **argv);
193
194 static bool invokeMethod(QObject *obj, const char *member,
195 Qt::ConnectionType,
196 QGenericReturnArgument ret,
197 QGenericArgument val0 = QGenericArgument(nullptr),
198 QGenericArgument val1 = QGenericArgument(),
199 QGenericArgument val2 = QGenericArgument(),
200 QGenericArgument val3 = QGenericArgument(),
201 QGenericArgument val4 = QGenericArgument(),
202 QGenericArgument val5 = QGenericArgument(),
203 QGenericArgument val6 = QGenericArgument(),
204 QGenericArgument val7 = QGenericArgument(),
205 QGenericArgument val8 = QGenericArgument(),
206 QGenericArgument val9 = QGenericArgument());
207
208 static inline bool invokeMethod(QObject *obj, const char *member,
209 QGenericReturnArgument ret,
210 QGenericArgument val0 = QGenericArgument(nullptr),
211 QGenericArgument val1 = QGenericArgument(),
212 QGenericArgument val2 = QGenericArgument(),
213 QGenericArgument val3 = QGenericArgument(),
214 QGenericArgument val4 = QGenericArgument(),
215 QGenericArgument val5 = QGenericArgument(),
216 QGenericArgument val6 = QGenericArgument(),
217 QGenericArgument val7 = QGenericArgument(),
218 QGenericArgument val8 = QGenericArgument(),
219 QGenericArgument val9 = QGenericArgument())
220 {
221 return invokeMethod(obj, member, Qt::AutoConnection, ret, val0, val1, val2, val3,
222 val4, val5, val6, val7, val8, val9);
223 }
224
225 static inline bool invokeMethod(QObject *obj, const char *member,
226 Qt::ConnectionType type,
227 QGenericArgument val0 = QGenericArgument(nullptr),
228 QGenericArgument val1 = QGenericArgument(),
229 QGenericArgument val2 = QGenericArgument(),
230 QGenericArgument val3 = QGenericArgument(),
231 QGenericArgument val4 = QGenericArgument(),
232 QGenericArgument val5 = QGenericArgument(),
233 QGenericArgument val6 = QGenericArgument(),
234 QGenericArgument val7 = QGenericArgument(),
235 QGenericArgument val8 = QGenericArgument(),
236 QGenericArgument val9 = QGenericArgument())
237 {
238 return invokeMethod(obj, member, type, QGenericReturnArgument(), val0, val1, val2,
239 val3, val4, val5, val6, val7, val8, val9);
240 }
241
242 static inline bool invokeMethod(QObject *obj, const char *member,
243 QGenericArgument val0 = QGenericArgument(nullptr),
244 QGenericArgument val1 = QGenericArgument(),
245 QGenericArgument val2 = QGenericArgument(),
246 QGenericArgument val3 = QGenericArgument(),
247 QGenericArgument val4 = QGenericArgument(),
248 QGenericArgument val5 = QGenericArgument(),
249 QGenericArgument val6 = QGenericArgument(),
250 QGenericArgument val7 = QGenericArgument(),
251 QGenericArgument val8 = QGenericArgument(),
252 QGenericArgument val9 = QGenericArgument())
253 {
254 return invokeMethod(obj, member, Qt::AutoConnection, QGenericReturnArgument(), val0,
255 val1, val2, val3, val4, val5, val6, val7, val8, val9);
256 }
257
258#ifdef Q_CLANG_QDOC
259 template<typename Functor, typename FunctorReturnType>
260 static bool invokeMethod(QObject *context, Functor function, Qt::ConnectionType type = Qt::AutoConnection, FunctorReturnType *ret = nullptr);
261 template<typename Functor, typename FunctorReturnType>
262 static bool invokeMethod(QObject *context, Functor function, FunctorReturnType *ret);
263#else
264
265 // invokeMethod() for member function pointer
266 template <typename Func>
267 static typename std::enable_if<QtPrivate::FunctionPointer<Func>::IsPointerToMemberFunction
268 && !std::is_convertible<Func, const char*>::value
269 && QtPrivate::FunctionPointer<Func>::ArgumentCount == 0, bool>::type
270 invokeMethod(typename QtPrivate::FunctionPointer<Func>::Object *object,
271 Func function,
272 Qt::ConnectionType type = Qt::AutoConnection,
273 typename QtPrivate::FunctionPointer<Func>::ReturnType *ret = nullptr)
274 {
275 return invokeMethodImpl(object, new QtPrivate::QSlotObjectWithNoArgs<Func>(function), type, ret);
276 }
277
278 template <typename Func>
279 static typename std::enable_if<QtPrivate::FunctionPointer<Func>::IsPointerToMemberFunction
280 && !std::is_convertible<Func, const char*>::value
281 && QtPrivate::FunctionPointer<Func>::ArgumentCount == 0, bool>::type
282 invokeMethod(typename QtPrivate::FunctionPointer<Func>::Object *object,
283 Func function,
284 typename QtPrivate::FunctionPointer<Func>::ReturnType *ret)
285 {
286 return invokeMethodImpl(object, new QtPrivate::QSlotObjectWithNoArgs<Func>(function), Qt::AutoConnection, ret);
287 }
288
289 // invokeMethod() for function pointer (not member)
290 template <typename Func>
291 static typename std::enable_if<!QtPrivate::FunctionPointer<Func>::IsPointerToMemberFunction
292 && !std::is_convertible<Func, const char*>::value
293 && QtPrivate::FunctionPointer<Func>::ArgumentCount == 0, bool>::type
294 invokeMethod(QObject *context, Func function,
295 Qt::ConnectionType type = Qt::AutoConnection,
296 typename QtPrivate::FunctionPointer<Func>::ReturnType *ret = nullptr)
297 {
298 return invokeMethodImpl(context, new QtPrivate::QFunctorSlotObjectWithNoArgsImplicitReturn<Func>(function), type, ret);
299 }
300
301 template <typename Func>
302 static typename std::enable_if<!QtPrivate::FunctionPointer<Func>::IsPointerToMemberFunction
303 && !std::is_convertible<Func, const char*>::value
304 && QtPrivate::FunctionPointer<Func>::ArgumentCount == 0, bool>::type
305 invokeMethod(QObject *context, Func function,
306 typename QtPrivate::FunctionPointer<Func>::ReturnType *ret)
307 {
308 return invokeMethodImpl(context, new QtPrivate::QFunctorSlotObjectWithNoArgsImplicitReturn<Func>(function), Qt::AutoConnection, ret);
309 }
310
311 // invokeMethod() for Functor
312 template <typename Func>
313 static typename std::enable_if<!QtPrivate::FunctionPointer<Func>::IsPointerToMemberFunction
314 && QtPrivate::FunctionPointer<Func>::ArgumentCount == -1
315 && !std::is_convertible<Func, const char*>::value, bool>::type
316 invokeMethod(QObject *context, Func function,
317 Qt::ConnectionType type = Qt::AutoConnection, decltype(function()) *ret = nullptr)
318 {
319 return invokeMethodImpl(context,
4
←
Potential memory leak
320 new QtPrivate::QFunctorSlotObjectWithNoArgs<Func, decltype(function())>(std::move(function)),
3
←
Memory is allocated
→
321 type,
322 ret);
323 }
324
325 template <typename Func>
326 static typename std::enable_if<!QtPrivate::FunctionPointer<Func>::IsPointerToMemberFunction
327 && QtPrivate::FunctionPointer<Func>::ArgumentCount == -1
328 && !std::is_convertible<Func, const char*>::value, bool>::type
329 invokeMethod(QObject *context, Func function, decltype(function()) *ret)
330 {
331 return invokeMethodImpl(context,
332 new QtPrivate::QFunctorSlotObjectWithNoArgs<Func, decltype(function())>(std::move(function)),
333 Qt::AutoConnection,
334 ret);
335 }
336
337#endif
338
339 QObject *newInstance(QGenericArgument val0 = QGenericArgument(nullptr),
340 QGenericArgument val1 = QGenericArgument(),
341 QGenericArgument val2 = QGenericArgument(),
342 QGenericArgument val3 = QGenericArgument(),
343 QGenericArgument val4 = QGenericArgument(),
344 QGenericArgument val5 = QGenericArgument(),
345 QGenericArgument val6 = QGenericArgument(),
346 QGenericArgument val7 = QGenericArgument(),
347 QGenericArgument val8 = QGenericArgument(),
348 QGenericArgument val9 = QGenericArgument()) const;
349
350 enum Call {
351 InvokeMetaMethod,
352 ReadProperty,
353 WriteProperty,
354 ResetProperty,
355 CreateInstance,
356 IndexOfMethod,
357 RegisterPropertyMetaType,
358 RegisterMethodArgumentMetaType,
359 BindableProperty,
360 CustomCall
361 };
362
363 int static_metacall(Call, int, void **) const;
364 static int metacall(QObject *, Call, int, void **);
365
366 template <const QMetaObject &MO> static constexpr const QMetaObject *staticMetaObject()
367 {
368 return &MO;
369 }
370
371 struct SuperData {
372 using Getter = const QMetaObject *(*)();
373 const QMetaObject *direct;
374 SuperData() = default;
375 constexpr SuperData(std::nullptr_t) : direct(nullptr) {}
376 constexpr SuperData(const QMetaObject *mo) : direct(mo) {}
377
378 constexpr const QMetaObject *operator->() const { return operator const QMetaObject *(); }
379
380#ifdef QT_NO_DATA_RELOCATION
381 Getter indirect = nullptr;
382 constexpr SuperData(Getter g) : direct(nullptr), indirect(g) {}
383 constexpr operator const QMetaObject *() const
384 { return indirect ? indirect() : direct; }
385 template <const QMetaObject &MO> static constexpr SuperData link()
386 { return SuperData(QMetaObject::staticMetaObject<MO>); }
387#else
388 constexpr SuperData(Getter g) : direct(g()) {}
389 constexpr operator const QMetaObject *() const
390 { return direct; }
391 template <const QMetaObject &MO> static constexpr SuperData link()
392 { return SuperData(QMetaObject::staticMetaObject<MO>()); }
393#endif
394 };
395
396 struct Data { // private data
397 SuperData superdata;
398 const uint *stringdata;
399 const uint *data;
400 typedef void (*StaticMetacallFunction)(QObject *, QMetaObject::Call, int, void **);
401 StaticMetacallFunction static_metacall;
402 const SuperData *relatedMetaObjects;
403 const QtPrivate::QMetaTypeInterface *const *metaTypes;
404 void *extradata; //reserved for future use
405 } d;
406
407private:
408 static bool invokeMethodImpl(QObject *object, QtPrivate::QSlotObjectBase *slot, Qt::ConnectionType type, void *ret);
409 friend class QTimer;
410};
411
412class Q_CORE_EXPORT__attribute__((visibility("default"))) QMetaObject::Connection {
413 void *d_ptr; //QObjectPrivate::Connection*
414 explicit Connection(void *data) : d_ptr(data) { }
415 friend class QObject;
416 friend class QObjectPrivate;
417 friend struct QMetaObject;
418 bool isConnected_helper() const;
419public:
420 ~Connection();
421 Connection();
422 Connection(const Connection &other);
423 Connection &operator=(const Connection &other);
424#ifdef Q_QDOC
425 operator bool() const;
426#else
427 // still using the restricted bool trick here, in order to support
428 // code using copy-init (e.g. `bool ok = connect(...)`)
429 typedef void *Connection::*RestrictedBool;
430 operator RestrictedBool() const { return d_ptr && isConnected_helper() ? &Connection::d_ptr : nullptr; }
431#endif
432
433 Connection(Connection &&other) noexcept : d_ptr(qExchange(other.d_ptr, nullptr)) {}
434 QT_MOVE_ASSIGNMENT_OPERATOR_IMPL_VIA_PURE_SWAP(Connection)Connection &operator=(Connection &&other) noexcept
{ swap(other); return *this; }
435 void swap(Connection &other) noexcept { qt_ptr_swap(d_ptr, other.d_ptr); }
436};
437
438inline void swap(QMetaObject::Connection &lhs, QMetaObject::Connection &rhs) noexcept
439{
440 lhs.swap(rhs);
441}
442
443inline const QMetaObject *QMetaObject::superClass() const
444{ return d.superdata; }
445
446namespace QtPrivate {
447 /* Trait that tells is a the Object has a Q_OBJECT macro */
448 template <typename Object> struct HasQ_OBJECT_Macro {
449 template <typename T>
450 static char test(int (T::*)(QMetaObject::Call, int, void **));
451 static int test(int (Object::*)(QMetaObject::Call, int, void **));
452 enum { Value = sizeof(test(&Object::qt_metacall)) == sizeof(int) };
453 };
454}
455
456QT_END_NAMESPACE
457
458#endif // QOBJECTDEFS_H