New utility.hpp header.

3 files changed, 48 insertions, 14 deletions

diff --git a/libdimensionxx/dimensionxx.hpp b/libdimensionxx/dimensionxx.hpp
index 99b9a97..ba3f662 100644
--- a/libdimensionxx/dimensionxx.hpp
+++ b/libdimensionxx/dimensionxx.hpp
@@ -22,6 +22,7 @@
 #define DIMENSIONXX_HPP
 
 // Internal helpers
+#include <dimensionxx/utility.hpp>
 #include <dimensionxx/cookie.hpp>
 
 // libdimension wrappers
diff --git a/libdimensionxx/dimensionxx/array.hpp b/libdimensionxx/dimensionxx/array.hpp
index e9c2967..b3b0496 100644
--- a/libdimensionxx/dimensionxx/array.hpp
+++ b/libdimensionxx/dimensionxx/array.hpp
@@ -188,20 +188,6 @@ namespace Dimension
     std::tr1::shared_ptr<T> m_object;
   };
 
-  // A constraint enforcing that T is a POD type by making it part of a union.
-  // Taking the address of this function will cause a compile-time failure if
-  // T is not a POD type.
-  template <typename T>
-  void
-  POD_constraint()
-  {
-    union
-    {
-      T t;
-    } constraint;
-    static_cast<void>(constraint); // Silence unused variable warning
-  }
-
   // Array_Element
 
   template <typename T>
diff --git a/libdimensionxx/dimensionxx/utility.hpp b/libdimensionxx/dimensionxx/utility.hpp
new file mode 100644
index 0000000..50c5e67
--- /dev/null
+++ b/libdimensionxx/dimensionxx/utility.hpp
@@ -0,0 +1,47 @@
+/*************************************************************************
+ * Copyright (C) 2009 Tavian Barnes <tavianator@gmail.com>               *
+ *                                                                       *
+ * This file is part of The Dimension Library.                           *
+ *                                                                       *
+ * The Dimension Library is free software; you can redistribute it and/  *
+ * or modify it under the terms of the GNU Lesser General Public License *
+ * as published by the Free Software Foundation; either version 3 of the *
+ * License, or (at your option) any later version.                       *
+ *                                                                       *
+ * The Dimension Library is distributed in the hope that it will be      *
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty   *
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU  *
+ * Lesser General Public License for more details.                       *
+ *                                                                       *
+ * You should have received a copy of the GNU Lesser General Public      *
+ * License along with this program.  If not, see                         *
+ * <http://www.gnu.org/licenses/>.                                       *
+ *************************************************************************/
+
+// Template utilities
+
+#ifndef DIMENSIONXX_UTILITY_HPP
+#define DIMENSIONXX_UTILITY_HPP
+
+namespace Dimension
+{
+  // A constraint enforcing that T is a POD type by making it part of a union.
+  // Taking the address of this function will cause a compile-time failure if
+  // T is not a POD type.
+  template <typename T>
+  void POD_constraint();
+
+  // POD constraint implementation
+  template <typename T>
+  void
+  POD_constraint()
+  {
+    union
+    {
+      T t;
+    } constraint;
+    static_cast<void>(constraint); // Silence unused variable warning
+  }
+}
+
+#endif // DIMENSIONXX_UTILITY_HPP