Initial release

engine/vendor/vst3sdk/vstgui4/vstgui/standalone/include/interface.h

@@ -0,0 +1,76 @@
+// This file is part of VSTGUI. It is subject to the license terms 
+// in the LICENSE file found in the top-level directory of this
+// distribution and at http://github.com/steinbergmedia/vstgui/LICENSE
+
+#pragma once
+
+#include <memory>
+
+//------------------------------------------------------------------------
+namespace VSTGUI {
+
+//------------------------------------------------------------------------
+class Interface
+{
+public:
+	virtual ~Interface () noexcept {}
+
+	Interface () = default;
+	Interface (const Interface&) = delete;
+	Interface (Interface&&) = delete;
+	Interface& operator= (const Interface&) = delete;
+	Interface& operator= (Interface&&) = delete;
+
+	template <typename T>
+	const auto dynamicCast () const
+	{
+		return dynamic_cast<const T*> (this);
+	}
+
+	template <typename T>
+	auto dynamicCast ()
+	{
+		return dynamic_cast<T*> (this);
+	}
+};
+
+//------------------------------------------------------------------------
+using InterfacePtr = std::shared_ptr<Interface>;
+
+//------------------------------------------------------------------------
+template <typename Iface, typename T>
+inline auto dynamicPtrCast (std::shared_ptr<T>& obj)
+{
+	return std::dynamic_pointer_cast<Iface> (obj);
+}
+
+//------------------------------------------------------------------------
+template <typename Iface, typename T>
+inline const auto dynamicPtrCast (const std::shared_ptr<T>& obj)
+{
+	return std::dynamic_pointer_cast<Iface> (obj);
+}
+
+//------------------------------------------------------------------------
+template <typename Iface, typename T>
+inline auto staticPtrCast (std::shared_ptr<T>& obj)
+{
+	return std::static_pointer_cast<Iface> (obj);
+}
+
+//------------------------------------------------------------------------
+template <typename Iface, typename T>
+inline const auto staticPtrCast (const std::shared_ptr<T>& obj)
+{
+	return std::static_pointer_cast<Iface> (obj);
+}
+
+//------------------------------------------------------------------------
+template <typename Iface, typename T>
+inline const auto& asInterface (const T& obj)
+{
+	return static_cast<const Iface&> (obj);
+}
+
+//------------------------------------------------------------------------
+} // VSTGUI