From 36be4e716aa28e527e5d59236a54c40f4714f0d3 Mon Sep 17 00:00:00 2001
From: Dave Abrahams <dave@boostpro.com>
Date: Tue, 11 Oct 2005 21:20:06 +0000
Subject: [PATCH] Martin Wille pointed out some missing header dependencies;
 fixed. Also moved boost/python/detail/is_xxx.hpp functionality into
 boost/detail/is_xxx.hpp to decouple library dependencies between python and
 parameter.

[SVN r31290]
---
 include/boost/detail/is_xxx.hpp | 61 +++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100755 include/boost/detail/is_xxx.hpp

diff --git a/include/boost/detail/is_xxx.hpp b/include/boost/detail/is_xxx.hpp
new file mode 100755
index 0000000..cb64fb3
--- /dev/null
+++ b/include/boost/detail/is_xxx.hpp
@@ -0,0 +1,61 @@
+// Copyright David Abrahams 2005. Distributed under the Boost
+// Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+#ifndef BOOST_DETAIL_IS_XXX_DWA20051011_HPP
+# define BOOST_DETAIL_IS_XXX_DWA20051011_HPP
+
+# include <boost/config.hpp>
+# include <boost/mpl/bool.hpp>
+# include <boost/preprocessor/enum_params.hpp>
+
+# if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+# include <boost/type_traits/is_reference.hpp>
+# include <boost/type_traits/add_reference.hpp>
+
+#  define BOOST_DETAIL_IS_XXX_DEF(name, qualified_name, nargs)          \
+template <class X_>                                                     \
+struct is_##name                                                        \
+{                                                                       \
+    typedef char yes;                                                   \
+    typedef char (&no)[2];                                              \
+                                                                        \
+    static typename add_reference<X_>::type dummy;                      \
+                                                                        \
+    struct helpers                                                      \
+    {                                                                   \
+        template < BOOST_PP_ENUM_PARAMS_Z(1, nargs, class U) >          \
+        static yes test(                                                \
+           qualified_name< BOOST_PP_ENUM_PARAMS_Z(1, nargs, U) >&, int  \
+        );                                                              \
+                                                                        \
+        template <class U>                                              \
+        static no test(U&, ...);                                        \
+    };                                                                  \
+                                                                        \
+    BOOST_STATIC_CONSTANT(                                              \
+        bool, value                                                     \
+        = !is_reference<X_>::value                                      \
+        & (sizeof(helpers::test(dummy, 0)) == sizeof(yes)));            \
+                                                                        \
+    typedef mpl::bool_<value> type;                                     \
+};
+
+# else
+
+#  define BOOST_DETAIL_IS_XXX_DEF(name, qualified_name, nargs)  \
+template <class T>                                              \
+struct is_##name : mpl::false_                                  \
+{                                                               \
+};                                                              \
+                                                                \
+template < BOOST_PP_ENUM_PARAMS_Z(1, nargs, class T) >          \
+struct is_##name<                                               \
+   qualified_name< BOOST_PP_ENUM_PARAMS_Z(1, nargs, T) >        \
+>                                                               \
+   : mpl::true_                                                 \
+{                                                               \
+};
+
+# endif
+
+#endif // BOOST_DETAIL_IS_XXX_DWA20051011_HPP