From a15cf65c44d5c224169c32ef5495b68c758134b7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= <jff@merkur>
Date: Sun, 18 May 2014 16:08:14 +0200
Subject: Imported Upstream version 3.3.0.2

---
 libcult/cult/meta/polymorphic-p.hxx | 56 +++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 libcult/cult/meta/polymorphic-p.hxx

(limited to 'libcult/cult/meta/polymorphic-p.hxx')

diff --git a/libcult/cult/meta/polymorphic-p.hxx b/libcult/cult/meta/polymorphic-p.hxx
new file mode 100644
index 0000000..0743de3
--- /dev/null
+++ b/libcult/cult/meta/polymorphic-p.hxx
@@ -0,0 +1,56 @@
+// file      : cult/meta/polymorphic-p.hxx
+// author    : Boris Kolpackov <boris@kolpackov.net>
+// copyright : Copyright (c) 2005-2010 Boris Kolpackov
+// license   : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#ifndef CULT_META_POLYMORPHIC_HXX
+#define CULT_META_POLYMORPHIC_HXX
+
+#include <cult/types/fundamental.hxx>
+
+#include <cult/meta/class-p.hxx>
+#include <cult/meta/remove-cv.hxx>
+
+namespace Cult
+{
+  namespace Meta
+  {
+    template <typename CVX>
+    class polymorphic_p
+    {
+      typedef typename remove_cv<CVX>::R X;
+
+      template <typename Y, Boolean c>
+      struct impl
+      {
+        static const Boolean r = false;
+      };
+
+      template <typename Y>
+      struct impl<Y, true>
+      {
+        //@@ private
+
+        struct S1 : Y
+        {
+          S1 ();
+        };
+
+        struct S2 : Y
+        {
+          S2 ();
+
+          virtual
+          ~S2 () throw ();
+        };
+
+        static const Boolean r = sizeof (S1) == sizeof (S2);
+      };
+
+    public:
+      static const Boolean r = impl<X, class_p<X>::r>::r;
+    };
+  }
+}
+
+#endif  // CULT_META_POLYMORPHIC_HXX
-- 
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