update boost

linx64/include/boost/parameter/aux_/pack/predicate.hpp

@@ -0,0 +1,87 @@
+// Copyright David Abrahams, Daniel Wallin 2003.
+// 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_PARAMETER_AUX_PACK_PREDICATE_HPP
+#define BOOST_PARAMETER_AUX_PACK_PREDICATE_HPP
+
+namespace boost { namespace parameter { namespace aux {
+
+    // helper for get_predicate<...>, below
+    template <typename T>
+    struct get_predicate_or_default
+    {
+        typedef T type;
+    };
+
+    // helper for predicate<...>, below
+    template <typename T>
+    struct get_predicate
+      : ::boost::parameter::aux
+        ::get_predicate_or_default<typename T::predicate>
+    {
+    };
+}}} // namespace boost::parameter::aux
+
+#include <boost/parameter/aux_/use_default.hpp>
+#include <boost/parameter/aux_/always_true_predicate.hpp>
+
+namespace boost { namespace parameter { namespace aux {
+
+    template <>
+    struct get_predicate_or_default< ::boost::parameter::aux::use_default>
+    {
+        typedef ::boost::parameter::aux::always_true_predicate type;
+    };
+}}} // namespace boost::parameter::aux
+
+#include <boost/parameter/required.hpp>
+#include <boost/parameter/optional.hpp>
+#include <boost/parameter/config.hpp>
+
+#if defined(BOOST_PARAMETER_CAN_USE_MP11)
+#include <boost/mp11/integral.hpp>
+#include <boost/mp11/utility.hpp>
+#else
+#include <boost/mpl/bool.hpp>
+#include <boost/mpl/if.hpp>
+#include <boost/mpl/eval_if.hpp>
+#include <boost/mpl/identity.hpp>
+#endif
+
+namespace boost { namespace parameter { namespace aux {
+
+    template <typename T>
+#if defined(BOOST_PARAMETER_CAN_USE_MP11)
+    using predicate = ::boost::mp11::mp_if<
+        ::boost::mp11::mp_if<
+            ::boost::parameter::aux::is_optional<T>
+          , ::boost::mp11::mp_true
+          , ::boost::parameter::aux::is_required<T>
+        >
+      , ::boost::parameter::aux::get_predicate<T>
+      , ::boost::mp11::mp_identity<
+            ::boost::parameter::aux::always_true_predicate
+        >
+    >;
+#else
+    struct predicate
+      : ::boost::mpl::eval_if<
+            typename ::boost::mpl::if_<
+                ::boost::parameter::aux::is_optional<T>
+              , ::boost::mpl::true_
+              , ::boost::parameter::aux::is_required<T>
+            >::type
+          , ::boost::parameter::aux::get_predicate<T>
+          , ::boost::mpl::identity<
+                ::boost::parameter::aux::always_true_predicate
+            >
+        >
+    {
+    };
+#endif  // BOOST_PARAMETER_CAN_USE_MP11
+}}} // namespace boost::parameter::aux
+
+#endif  // include guard
+