From 13347878df50f1421fdb73544ded91c201b0df05 Mon Sep 17 00:00:00 2001
From: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
Date: Fri, 28 Sep 2007 10:32:59 +0200
Subject: [PATCH] implement the helper IntToType template

---
 src/core/int-to-type.h | 19 +++++++++++++++++++
 src/core/wscript       |  1 +
 2 files changed, 20 insertions(+)
 create mode 100644 src/core/int-to-type.h

diff --git a/src/core/int-to-type.h b/src/core/int-to-type.h
new file mode 100644
index 000000000..240fe8a71
--- /dev/null
+++ b/src/core/int-to-type.h
@@ -0,0 +1,19 @@
+#ifndef INT_TO_TYPE_H
+#define INT_TO_TYPE_H
+
+namespace ns3 {
+
+/**
+ * This trivial template is extremely useful, as explained in
+ * "Modern C++ Design", p29, section 2.4, 
+ * "Mapping Integral Constants to Types"
+ */
+template <int v>
+struct IntToType
+{
+  enum {value = v};
+};
+
+} // namespace ns3
+
+#endif /* INT_TO_TYPE_H */
diff --git a/src/core/wscript b/src/core/wscript
index c69bb018c..bfb784825 100644
--- a/src/core/wscript
+++ b/src/core/wscript
@@ -95,5 +95,6 @@ def build(bld):
         'composite-trace-resolver.h',
         'array-trace-resolver.h',
         'trace-doc.h',
+        'int-to-type.h',
         ]