qdbusxml2cpp: invert Q_DECL_DEPRECATED and inline in the output

Commit 93dad2bf91d414a41c6e2c7db6c75171b4917d4d (6.0) changed
Q_DECL_DEPRECATED to use the [[deprecated]] attribute, which must appear
before inline and other keywords.

To keep it next to Q_NOREPLY, I also moved the "inline" into the next
string.

Added missing tests for both.

Fixes: QTBUG-110979
Change-Id: I9671dee8ceb64aa9b9cafffd1741656e86f40453
Reviewed-by: David Faure <david.faure@kdab.com>
(cherry picked from commit f67b32e735cbbed6848b5d40a61329f71f54a14d)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

src/tools/qdbusxml2cpp/qdbusxml2cpp.cpp

@@ -606,13 +606,15 @@ static void writeProxy(const QString &filename, const QDBusIntrospection::Interf
                 continue;
             }
 
-            hs << "    inline "
+            if (isDeprecated)
-               << (isDeprecated ? "Q_DECL_DEPRECATED " : "");
+                hs << "    Q_DECL_DEPRECATED ";
+            else
+                hs << "    ";
 
             if (isNoReply) {
-                hs << "Q_NOREPLY void ";
+                hs << "Q_NOREPLY inline void ";
             } else {
-                hs << "QDBusPendingReply<";
+                hs << "inline QDBusPendingReply<";
                 for (qsizetype i = 0; i < method.outputArgs.size(); ++i)
                     hs << (i > 0 ? ", " : "")
                        << templateArg(qtTypeName(method.outputArgs.at(i).name, method.outputArgs.at(i).type,
@@ -648,7 +650,7 @@ static void writeProxy(const QString &filename, const QDBusIntrospection::Interf
 
             if (method.outputArgs.size() > 1) {
                 // generate the old-form QDBusReply methods with multiple incoming parameters
-                hs << "    inline " << (isDeprecated ? "Q_DECL_DEPRECATED " : "") << "QDBusReply<"
+                hs << (isDeprecated ? "    Q_DECL_DEPRECATED " : "    ") << "inline QDBusReply<"
                    << templateArg(qtTypeName(method.outputArgs.first().name, method.outputArgs.first().type,
                                              method.annotations, 0, "Out"))
                    << "> ";

tests/auto/tools/qdbusxml2cpp/tst_qdbusxml2cpp.cpp

@@ -240,6 +240,46 @@ void tst_qdbusxml2cpp::process_data()
             << QRegularExpression("Q_SLOTS:.*QString Method\\(const QString &\\w*, const QString &\\w*, QString &",
                                   QRegularExpression::DotMatchesEverythingOption);
 
+    QTest::newRow("method-deprecated-0out")
+            << "<method name=\"Method\">"
+               "<annotation name=\"org.freedesktop.DBus.Deprecated\" value=\"true\"/>"
+               "</method>"
+            << QRegularExpression("Q_SLOTS:.*Q_DECL_DEPRECATED inline QDBusPendingReply<> Method\\(\\)",
+                                  QRegularExpression::DotMatchesEverythingOption)
+            << QRegularExpression("Q_SLOTS:.*void Method\\(\\)",
+                                  QRegularExpression::DotMatchesEverythingOption);
+
+    QTest::newRow("method-deprecated-2out")
+            << "<method name=\"Method\">"
+               "<annotation name=\"org.freedesktop.DBus.Deprecated\" value=\"true\"/>"
+               "<arg type=\"s\" direction=\"out\"/>"
+               "<arg type=\"s\" direction=\"out\"/>"
+               "</method>"
+            << QRegularExpression("Q_SLOTS:.*Q_DECL_DEPRECATED inline QDBusPendingReply<QString, QString> Method\\(\\)"
+                                  ".*Q_DECL_DEPRECATED inline QDBusReply<QString> Method\\(QString &\\w*\\)",
+                                  QRegularExpression::DotMatchesEverythingOption)
+            << QRegularExpression("Q_SLOTS:.*QString Method\\(QString &",
+                                  QRegularExpression::DotMatchesEverythingOption);
+
+    QTest::newRow("method-noreply")
+            << "<method name=\"Method\">"
+               "<annotation name=\"org.freedesktop.DBus.Method.NoReply\" value=\"true\"/>"
+               "</method>"
+            << QRegularExpression("Q_SLOTS:.*Q_NOREPLY inline void Method\\(\\).*\\bQDBus::NoBlock\\b",
+                                  QRegularExpression::DotMatchesEverythingOption)
+            << QRegularExpression("Q_SLOTS:.*Q_NOREPLY void Method\\(",
+                                  QRegularExpression::DotMatchesEverythingOption);
+
+    QTest::newRow("method-deprecated-noreply")
+            << "<method name=\"Method\">"
+               "<annotation name=\"org.freedesktop.DBus.Method.NoReply\" value=\"true\"/>"
+               "<annotation name=\"org.freedesktop.DBus.Deprecated\" value=\"true\"/>"
+               "</method>"
+            << QRegularExpression("Q_SLOTS:.*Q_DECL_DEPRECATED Q_NOREPLY inline void Method\\(\\).*\\bQDBus::NoBlock\\b",
+                                  QRegularExpression::DotMatchesEverythingOption)
+            << QRegularExpression("Q_SLOTS:.*Q_NOREPLY void Method\\(",
+                                  QRegularExpression::DotMatchesEverythingOption);
+
     // -- signals --
     for (int i = 0; i < basicTypeCount; ++i) {
         QRegularExpression rx(QString("Q_SIGNALS:.*\\bvoid Signal\\((const )?%1\\b")
@@ -261,6 +301,15 @@ void tst_qdbusxml2cpp::process_data()
                     <annotation name="org.qtproject.QtDBus.QtTypeName.Out0" value="QVariantMap"/>"
                   </signal>)"
             << rx << rx;
+
+    QTest::newRow("signal-deprecated")
+            << R"(<signal name="Signal">
+                    <annotation name="org.freedesktop.DBus.Deprecated" value="true"/>
+                  </signal>)"
+            << QRegularExpression(R"(Q_SIGNALS:.*\bQ_DECL_DEPRECATED void Signal\(\))",
+                                  QRegularExpression::DotMatchesEverythingOption)
+            << QRegularExpression(R"(Q_SIGNALS:.*\bvoid Signal\(\))",
+                                  QRegularExpression::DotMatchesEverythingOption);
 }
 
 void tst_qdbusxml2cpp::process()