From 85583b5ea9f6076131234f87a9ab5b1b40fa21ad Mon Sep 17 00:00:00 2001
From: Eric Niebler <eric@boostpro.com>
Date: Wed, 27 Jun 2012 04:27:50 +0000
Subject: [PATCH] allow boolean traits implementations to use std::true_type
 and std::false_type

[SVN r79131]
---
 include/boost/fusion/support/is_segmented.hpp | 7 +++++--
 include/boost/fusion/support/is_sequence.hpp  | 8 +++++---
 include/boost/fusion/support/is_view.hpp      | 7 +++++--
 3 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/include/boost/fusion/support/is_segmented.hpp b/include/boost/fusion/support/is_segmented.hpp
index ba571dc5..6e62eac4 100644
--- a/include/boost/fusion/support/is_segmented.hpp
+++ b/include/boost/fusion/support/is_segmented.hpp
@@ -7,6 +7,7 @@
 #if !defined(FUSION_IS_SEGMENTED_03202006_0015)
 #define FUSION_IS_SEGMENTED_03202006_0015
 
+#include <boost/mpl/bool.hpp>
 #include <boost/fusion/support/tag_of.hpp>
 
 namespace boost { namespace fusion 
@@ -41,8 +42,10 @@ namespace boost { namespace fusion
     {
         template <typename Sequence>
         struct is_segmented
-          : extension::is_segmented_impl<typename traits::tag_of<Sequence>::type>::
-                template apply<Sequence>
+          : mpl::bool_<
+                (bool)extension::is_segmented_impl<typename traits::tag_of<Sequence>::type>::
+                    template apply<Sequence>::type::value
+            >
         {
         };
     }
diff --git a/include/boost/fusion/support/is_sequence.hpp b/include/boost/fusion/support/is_sequence.hpp
index 2f0ee433..d33af6ab 100644
--- a/include/boost/fusion/support/is_sequence.hpp
+++ b/include/boost/fusion/support/is_sequence.hpp
@@ -59,9 +59,11 @@ namespace boost { namespace fusion
     {
         template <typename T>
         struct is_sequence
-          : extension::is_sequence_impl<
-                typename fusion::detail::tag_of<T>::type
-            >::template apply<T>
+          : mpl::bool_<
+                (bool)extension::is_sequence_impl<
+                    typename fusion::detail::tag_of<T>::type
+                >::template apply<T>::type::value
+            >
         {};
 
         template <typename Sequence, typename Enable = void>
diff --git a/include/boost/fusion/support/is_view.hpp b/include/boost/fusion/support/is_view.hpp
index dbcc93a9..4ec9e065 100644
--- a/include/boost/fusion/support/is_view.hpp
+++ b/include/boost/fusion/support/is_view.hpp
@@ -7,6 +7,7 @@
 #if !defined(FUSION_IS_VIEW_03202006_0015)
 #define FUSION_IS_VIEW_03202006_0015
 
+#include <boost/mpl/bool.hpp>
 #include <boost/fusion/support/detail/is_view.hpp>
 #include <boost/fusion/support/tag_of.hpp>
 
@@ -54,8 +55,10 @@ namespace boost { namespace fusion
     {
         template <typename T>
         struct is_view :
-            extension::is_view_impl<typename fusion::detail::tag_of<T>::type>::
-                template apply<T>::type
+            mpl::bool_<
+                (bool)extension::is_view_impl<typename fusion::detail::tag_of<T>::type>::
+                    template apply<T>::type::value
+            >
         {};
     }
 }}