Merge pull request #4902 from JohannesLorenz/model-visitor

Make Model class visitable

src/core/CMakeLists.txt

@@ -40,6 +40,7 @@ set(LMMS_SRCS
 	core/MixerWorkerThread.cpp
 	core/MixHelpers.cpp
 	core/Model.cpp
+	core/ModelVisitor.cpp
 	core/Note.cpp
 	core/NotePlayHandle.cpp
 	core/Oscillator.cpp

src/core/ModelVisitor.cpp

@@ -0,0 +1,44 @@
+/*
+ * ModelVisitor.cpp - visitors for automatable models
+ *
+ * Copyright (c) 2019-2019 Johannes Lorenz <j.git$$$lorenz-ho.me, $$$=@>
+ *
+ * This file is part of LMMS - https://lmms.io
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include "ModelVisitor.h"
+
+#include "AutomatableModel.h"
+#include "ComboBoxModel.h"
+#include "TempoSyncKnobModel.h"
+
+void ModelVisitor::visit(BoolModel &m) { up(m); }
+void ModelVisitor::visit(IntModel &m) { up(m); }
+void ModelVisitor::visit(FloatModel &m) { up(m); }
+void ModelVisitor::visit(ComboBoxModel &m) { up<IntModel>(m); }
+void ModelVisitor::visit(TempoSyncKnobModel &m) { up<FloatModel>(m); }
+
+void ConstModelVisitor::visit(const BoolModel &m) { up(m); }
+void ConstModelVisitor::visit(const IntModel &m) { up(m); }
+void ConstModelVisitor::visit(const FloatModel &m) { up(m); }
+void ConstModelVisitor::visit(const ComboBoxModel &m) { up<IntModel>(m); }
+void ConstModelVisitor::visit(const TempoSyncKnobModel &m) { up<FloatModel>(m); }
+
+ModelVisitor::~ModelVisitor() {}
+ConstModelVisitor::~ConstModelVisitor() {}