Add files for rebased serializer refactoring done by Ivan

lib/serializer/CMemorySerializer.cpp

@@ -0,0 +1,40 @@
+#include "StdInc.h"
+#include "CMemorySerializer.h"
+
+#include "../registerTypes/RegisterTypes.h"
+
+/*
+ * CMemorySerializer.cpp, part of VCMI engine
+ *
+ * Authors: listed in file AUTHORS in main folder
+ *
+ * License: GNU General Public License v2.0 or later
+ * Full text of license available in license.txt file, in main folder
+ *
+ */
+
+int CMemorySerializer::read(void * data, unsigned size)
+{
+	if(buffer.size() < readPos + size)
+		throw std::runtime_error(boost::str(boost::format("Cannot read past the buffer (accessing index %d, while size is %d)!") % (readPos + size - 1) % buffer.size()));
+
+	std::memcpy(data, buffer.data() + readPos, size);
+	readPos += size;
+	return size;
+}
+
+int CMemorySerializer::write(const void * data, unsigned size)
+{
+	auto oldSize = buffer.size(); //and the pos to write from
+	buffer.resize(oldSize + size);
+	std::memcpy(buffer.data() + oldSize, data, size);
+	return size;
+}
+
+CMemorySerializer::CMemorySerializer(): iser(this), oser(this)
+{
+	readPos = 0;
+	registerTypes(iser);
+	registerTypes(oser);
+}
+