Added boost header

test/external/boost/phoenix/core/value.hpp

@@ -0,0 +1,112 @@
+/*==============================================================================
+    Copyright (c) 2001-2010 Joel de Guzman
+    Copyright (c) 2010 Thomas Heller
+
+    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_PHOENIX_CORE_VALUE_HPP
+#define BOOST_PHOENIX_CORE_VALUE_HPP
+
+#include <boost/phoenix/core/limits.hpp>
+#include <boost/phoenix/core/actor.hpp>
+#include <boost/phoenix/core/as_actor.hpp>
+#include <boost/phoenix/core/terminal.hpp>
+#include <boost/utility/result_of.hpp>
+
+namespace boost { namespace phoenix
+{
+    ////////////////////////////////////////////////////////////////////////////
+    //
+    // values
+    //
+    //      function for evaluating values, e.g. val(123)
+    //
+    ////////////////////////////////////////////////////////////////////////////
+ 
+    namespace expression
+    {
+        template <typename T>
+        struct value
+            : expression::terminal<T>
+        {};
+    }
+
+    template <typename T>
+    typename expression::value<T>::type const
+    inline val(T t)
+    {
+        return expression::value<T>::make(t);
+    }
+
+    // Call out actor for special handling
+    template<typename Expr>
+    struct is_custom_terminal<actor<Expr> >
+      : mpl::true_
+    {};
+    
+    // Special handling for actor
+    template<typename Expr>
+    struct custom_terminal<actor<Expr> >
+    {
+        template <typename Sig>
+        struct result;
+
+        template <typename This, typename Actor, typename Context>
+        struct result<This(Actor, Context)>
+            : boost::remove_const<
+				    typename boost::remove_reference<
+                    typename evaluator::impl<Actor, Context, int>::result_type
+                >::type
+				>
+        {};     
+
+        template <typename Context>
+        typename result<custom_terminal(actor<Expr> const &, Context &)>::type
+        operator()(actor<Expr> const & expr, Context & ctx) const
+        {
+            return boost::phoenix::eval(expr, ctx);
+        }
+    };
+
+    namespace meta
+    {
+        template<typename T>
+        struct const_ref
+            : add_reference<typename add_const<T>::type>
+        {};
+
+        template<typename T>
+        struct argument_type
+            : mpl::eval_if_c<
+                is_function<typename remove_pointer<T>::type>::value
+              , mpl::identity<T>
+              , const_ref<T>
+            >
+        {
+            typedef T type;
+        };
+
+        template <typename T>
+        struct decay
+        {
+            typedef T type;
+        };
+        template <typename T, int N>
+        struct decay<T[N]> : decay<T const *> {};
+    }
+    
+    template <typename T>
+    struct as_actor<T, mpl::false_>
+    {
+        typedef typename expression::value<typename meta::decay<T>::type >::type type;
+
+        static type
+        convert(typename meta::argument_type<typename meta::decay<T>::type>::type t)
+        {
+            return expression::value<typename meta::decay<T>::type >::make(t);
+        }
+    };
+}}
+
+#endif