1 files changed, 55 insertions, 0 deletions
diff --git a/erts/emulator/beam/decl.h b/erts/emulator/beam/decl.h
new file mode 100644
index 0000000000..da1be29d53
--- /dev/null
+++ b/erts/emulator/beam/decl.h
@@ -0,0 +1,55 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 1996-2009. All Rights Reserved.
+ * 
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ * 
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * %CopyrightEnd%
+ */
+
+#ifndef __DECL_H__
+#define __DECL_H__
+
+#if defined(__STDC__) || defined(_MSC_VER)
+#define EXTERN_FUNCTION(t, f, x)  extern t f x
+#define FUNCTION(t, f, x) t f x
+#define _DOTS_ ...
+#define _VOID_      void
+#elif defined(__cplusplus)
+#define EXTERN_FUNCTION(f, x) extern "C" { f x }
+#define FUNCTION(t, f, x) t f x
+#define _DOTS_ ...
+#define _VOID_    void
+#else
+#define EXTERN_FUNCTION(t, f, x) extern t f (/*x*/)
+#define FUNCTION(t, f, x) t f (/*x*/)
+#define _DOTS_
+#define _VOID_
+#endif
+
+/*
+** Example of declarations
+**
+** EXTERN_FUNCTION(void, foo, (int, int, char));
+** FUNCTION(void, bar, (int, char));
+**
+** struct funcs {
+**    FUNCTION(int*, (*f1), (int, int));
+**    FUNCTION(void, (*f2), (int, char));
+**    FUNCTION(void, (*f3), (_VOID_));
+**    FUNCTION(int,  (*f4), (char*, _DOTS_));
+** };
+**
+*/
+
+#endif