Mercurial > ldforge / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/serializer.h	Mon Mar 05 22:40:34 2018 +0200
@@ -0,0 +1,74 @@
+/*
+ *  LDForge: LDraw parts authoring CAD
+ *  Copyright (C) 2013 - 2018 Teemu Piippo
+ *
+ *  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 3 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.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include "main.h"
+
+using LDObjectState = QVector<QVariant>;
+
+class Serializer
+{
+public:
+	using Archive = LDObjectState;
+
+	enum Action
+	{
+		Store,
+		Restore,
+	};
+
+	Serializer(Archive& archive, Action action);
+
+	template<typename T>
+	Serializer& operator<<(T& value);
+
+	static Archive store(LDObject* object);
+	static LDObject* restore(Archive& archive) __attribute__((warn_unused_result));
+	static LDObject* clone(LDObject* object) __attribute__((warn_unused_result));
+
+private:
+	Archive& archive;
+	int cursor = 0;
+	Action action;
+};
+
+template<typename T>
+Serializer& Serializer::operator<<(T& value)
+{
+	switch (action)
+	{
+	case Store:
+		this->archive.append(QVariant::fromValue(value));
+		break;
+
+	case Restore:
+		if (this->cursor < this->archive.size())
+		{
+			value = this->archive[this->cursor].value<T>();
+			this->cursor += 1;
+		}
+		else
+		{
+			fprintf(stderr, "warning: archive ran out while restoring\n");
+			value = T {};
+		}
+		break;
+	}
+
+	return *this;
+}