Initial release

engine/vendor/vst3sdk/base/source/classfactoryhelpers.h

@@ -0,0 +1,67 @@
+//------------------------------------------------------------------------
+// Project     : SDK Base
+// Version     : 1.0
+//
+// Category    : Helpers
+// Filename    : base/source/classfactoryhelpers.h
+// Created by  : Steinberg, 03/2017
+// Description : Class factory
+//
+//-----------------------------------------------------------------------------
+// This file is part of a Steinberg SDK. It is subject to the license terms
+// in the LICENSE file found in the top-level directory of this distribution
+// and at www.steinberg.net/sdklicenses. 
+// No part of the SDK, including this file, may be copied, modified, propagated,
+// or distributed except according to the terms contained in the LICENSE file.
+//-----------------------------------------------------------------------------
+
+#pragma once
+
+//------------------------------------------------------------------------------
+// Helper Macros. Not intended for direct use.
+// Use:
+//	META_CLASS(className),
+//	META_CLASS_IFACE(className,Interface),
+//	META_CLASS_SINGLE(className,Interface)
+// instead.
+//------------------------------------------------------------------------------
+#define META_CREATE_FUNC(funcName) static FUnknown* funcName ()
+
+#define CLASS_CREATE_FUNC(className)                                               \
+	namespace Meta {                                                               \
+	META_CREATE_FUNC (make##className) { return (NEW className)->unknownCast (); } \
+	}
+
+#define SINGLE_CREATE_FUNC(className)                                                     \
+	namespace Meta {                                                                      \
+	META_CREATE_FUNC (make##className) { return className::instance ()->unknownCast (); } \
+	}
+
+#define _META_CLASS(className)                                                         \
+	namespace Meta {                                                                   \
+	static Steinberg::MetaClass meta##className ((#className), Meta::make##className); \
+	}
+
+#define _META_CLASS_IFACE(className, Interface)                                                  \
+	namespace Meta {                                                                             \
+	static Steinberg::MetaClass meta##Interface##className ((#className), Meta::make##className, \
+	                                                        Interface##_iid);                    \
+	}
+
+/** TODO
+ */
+#define META_CLASS(className)     \
+	CLASS_CREATE_FUNC (className) \
+	_META_CLASS (className)
+
+/** TODO
+ */
+#define META_CLASS_IFACE(className, Interface) \
+	CLASS_CREATE_FUNC (className)              \
+	_META_CLASS_IFACE (className, Interface)
+
+/** TODO
+ */
+#define META_CLASS_SINGLE(className, Interface) \
+	SINGLE_CREATE_FUNC (className)              \
+	_META_CLASS_IFACE (className, Interface)