extensionsystem: "soft dependencies" infrastructure

Reviewed-by: con Reviewed-by: ckamm
2011-01-05 18:35:08 +01:00
parent 2c26c6b173
commit 37b9bf84eb
5 changed files with 421 additions and 11 deletions
--- a/src/libs/extensionsystem/invoker.cpp
+++ b/src/libs/extensionsystem/invoker.cpp
@@ -0,0 +1,88 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** 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.
+**
+**************************************************************************/
+
+#include "invoker.h"
+
+namespace ExtensionSystem {
+
+InvokerBase::InvokerBase()
+{
+    lastArg = 0;
+    useRet = false;
+    nag = true;
+    success = true;
+    target = 0;
+}
+
+InvokerBase::~InvokerBase()
+{
+    if (!success && nag)
+        qWarning("Could not invoke function '%s' in object of type '%s'.",
+            sig.constData(), target->metaObject()->className());
+}
+
+bool InvokerBase::wasSuccessful() const
+{
+    nag = false;
+    return success;
+}
+
+void InvokerBase::invoke(QObject *t, const char *slot)
+{
+    target = t;
+    success = false;
+    sig.append(slot, qstrlen(slot));
+    sig.append('(');
+    for (int paramCount = 0; paramCount < lastArg; ++paramCount) {
+        if (paramCount)
+            sig.append(',');
+        const char *type = arg[paramCount].name();
+        sig.append(type, strlen(type));
+    }
+    sig.append(')');
+    sig.append('\0');
+    int idx = target->metaObject()->indexOfMethod(sig.constData());
+    if (idx < 0)
+        return;
+    QMetaMethod method = target->metaObject()->method(idx);
+    if (useRet)
+        success = method.invoke(target, ret,
+           arg[0], arg[1], arg[2], arg[3], arg[4],
+           arg[5], arg[6], arg[7], arg[8], arg[9]);
+    else
+        success = method.invoke(target,
+           arg[0], arg[1], arg[2], arg[3], arg[4],
+           arg[5], arg[6], arg[7], arg[8], arg[9]);
+}
+
+} // namespace ExtensionSystem