Define and use _XBT_STRINGIFY and _XBT_CONCAT{,2,3,4}.

[simgrid.git] / include / xbt / base.h

diff --git a/include/xbt/base.h b/include/xbt/base.h
index 8c934d2..e0d787e 100644 (file)
--- a/include/xbt/base.h
+++ b/include/xbt/base.h
@@ -92,6 +92,15 @@
 #  endif
 #endif
 
+/* Stringify argument. */
+#define _XBT_STRINGIFY(a) #a
+
+/* Concatenate arguments. _XBT_CONCAT2 adds a level of indirection over _XBT_CONCAT. */
+#define _XBT_CONCAT(a, b) a##b
+#define _XBT_CONCAT2(a, b) _XBT_CONCAT(a, b)
+#define _XBT_CONCAT3(a, b, c) _XBT_CONCAT2(_XBT_CONCAT(a, b), c)
+#define _XBT_CONCAT4(a, b, c, d) _XBT_CONCAT2(_XBT_CONCAT3(a, b, c), d)
+
 /*
  * Expands to `one' if there is only one argument for the variadic part.
  * Otherwise, expands to `more'.