From b51965dddbed68f23c5e8c169c23c794313ce5f6 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 28 Jun 2011 17:17:23 +0200
Subject: Add boost subset as an implementation detail

---
 cutl/details/boost/type_traits/is_pod.hpp | 135 ++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)
 create mode 100644 cutl/details/boost/type_traits/is_pod.hpp

(limited to 'cutl/details/boost/type_traits/is_pod.hpp')

diff --git a/cutl/details/boost/type_traits/is_pod.hpp b/cutl/details/boost/type_traits/is_pod.hpp
new file mode 100644
index 0000000..5527790
--- /dev/null
+++ b/cutl/details/boost/type_traits/is_pod.hpp
@@ -0,0 +1,135 @@
+
+//  (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
+//  Use, modification and distribution are subject to 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).
+//
+//  See http://www.boost.org/libs/type_traits for most recent version including documentation.
+
+#ifndef BOOST_TT_IS_POD_HPP_INCLUDED
+#define BOOST_TT_IS_POD_HPP_INCLUDED
+
+#include <cutl/details/boost/type_traits/config.hpp>
+#include <cutl/details/boost/type_traits/is_void.hpp>
+#include <cutl/details/boost/type_traits/is_scalar.hpp>
+#include <cutl/details/boost/type_traits/detail/ice_or.hpp>
+#include <cutl/details/boost/type_traits/intrinsics.hpp>
+
+#include <cstddef>
+
+// should be the last #include
+#include <cutl/details/boost/type_traits/detail/bool_trait_def.hpp>
+
+namespace cutl_details_boost {
+
+// forward declaration, needed by 'is_pod_array_helper' template below
+template< typename T > struct is_POD;
+
+namespace detail {
+
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+template <typename T> struct is_pod_impl
+{ 
+    BOOST_STATIC_CONSTANT(
+        bool, value =
+        (::cutl_details_boost::type_traits::ice_or<
+            ::cutl_details_boost::is_scalar<T>::value,
+            ::cutl_details_boost::is_void<T>::value,
+            BOOST_IS_POD(T)
+         >::value));
+};
+
+#if !defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS)
+template <typename T, std::size_t sz>
+struct is_pod_impl<T[sz]>
+    : is_pod_impl<T>
+{
+};
+#endif
+
+#else
+
+template <bool is_array = false>
+struct is_pod_helper
+{
+    template <typename T> struct result_
+    {
+        BOOST_STATIC_CONSTANT(
+            bool, value =
+            (::cutl_details_boost::type_traits::ice_or<
+                ::cutl_details_boost::is_scalar<T>::value,
+                ::cutl_details_boost::is_void<T>::value,
+                BOOST_IS_POD(T)
+            >::value));
+    };
+};
+
+template <bool b>
+struct bool_to_yes_no_type
+{
+    typedef ::cutl_details_boost::type_traits::no_type type;
+};
+
+template <>
+struct bool_to_yes_no_type<true>
+{
+    typedef ::cutl_details_boost::type_traits::yes_type type;
+};
+
+template <typename ArrayType>
+struct is_pod_array_helper
+{
+    enum { is_pod = ::cutl_details_boost::is_POD<ArrayType>::value }; // MSVC workaround
+    typedef typename bool_to_yes_no_type<is_pod>::type type;
+    type instance() const;
+};
+
+template <typename T>
+is_pod_array_helper<T> is_POD_array(T*);
+
+template <>
+struct is_pod_helper<true>
+{
+    template <typename T> struct result_
+    {
+        static T& help();
+        BOOST_STATIC_CONSTANT(bool, value =
+            sizeof(is_POD_array(help()).instance()) == sizeof(::cutl_details_boost::type_traits::yes_type)
+            );
+    };
+};
+
+
+template <typename T> struct is_pod_impl
+{ 
+   BOOST_STATIC_CONSTANT(
+       bool, value = (
+           ::cutl_details_boost::detail::is_pod_helper<
+              ::cutl_details_boost::is_array<T>::value
+           >::template result_<T>::value
+           )
+       );
+};
+
+#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+// the following help compilers without partial specialization support:
+BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,void,true)
+
+#ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
+BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,void const,true)
+BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,void volatile,true)
+BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,void const volatile,true)
+#endif
+
+} // namespace detail
+
+BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_POD,T,::cutl_details_boost::detail::is_pod_impl<T>::value)
+BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_pod,T,::cutl_details_boost::detail::is_pod_impl<T>::value)
+
+} // namespace cutl_details_boost
+
+#include <cutl/details/boost/type_traits/detail/bool_trait_undef.hpp>
+
+#endif // BOOST_TT_IS_POD_HPP_INCLUDED
-- 
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