From 235f5c2d425bea37447bb87182089dbf5775c82e Mon Sep 17 00:00:00 2001
From: Oliver Sander <sander@dune-project.org>
Date: Mon, 22 Dec 2008 14:11:22 +0000
Subject: [PATCH] add enable_if as an stl-conforming replacement of EnableIf.
Take it from the library header if present. Deprecate EnableIf
[[Imported from SVN: r5396]]
---
common/typetraits.hh | 26 +++++++++++++++++++++++++-
1 file changed, 25 insertions(+), 1 deletion(-)
diff --git a/common/typetraits.hh b/common/typetraits.hh
index bfd220728..7ad8498b1 100644
--- a/common/typetraits.hh
+++ b/common/typetraits.hh
@@ -9,6 +9,8 @@
#include <type_traits>
#endif
+#include <dune/common/deprecated.hh>
+
namespace Dune
{
@@ -257,17 +259,39 @@ namespace Dune
* @brief Enable typedef if condition is met.
*
* Depending on the value of b the type T is provided as typedef type.
+ * \deprecated Use enable_if instead
*/
template<bool b, typename T=void>
struct EnableIf
{
typedef T type;
typedef T Type;
- };
+ } DUNE_DEPRECATED;
template<typename T>
struct EnableIf<false,T>
+ {} DUNE_DEPRECATED;
+
+#ifdef HAVE_TYPE_TRAITS
+ using std::enable_if;
+#else
+ /**
+ * @brief Enable typedef if condition is met.
+ *
+ * Replacement implementation for compilers without this in the stl.
+ * Depending on the value of b the type T is provided as typedef type.
+ */
+ template<bool b, typename T=void>
+ struct enable_if
+ {
+ typedef T type;
+ };
+
+ template<typename T>
+ struct enable_if<false,T>
{};
+#endif
+
/**
* @brief Enable typedef if two types are interoperable.
--
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