[Boost-commit] svn:boost r45525 - branches/proto/v4/boost/phoenix/statement

From: eric_at_[hidden]
Date: 2008-05-19 01:51:28

Author: eric_niebler
Date: 2008-05-19 01:51:27 EDT (Mon, 19 May 2008)
New Revision: 45525
URL: http://svn.boost.org/trac/boost/changeset/45525

Log:
add throw_() and throw_(e)
Added:
   branches/proto/v4/boost/phoenix/statement/throw.hpp   (contents, props changed)

Added: branches/proto/v4/boost/phoenix/statement/throw.hpp
==============================================================================
--- (empty file)
+++ branches/proto/v4/boost/phoenix/statement/throw.hpp	2008-05-19 01:51:27 EDT (Mon, 19 May 2008)
@@ -0,0 +1,59 @@
+/*=============================================================================
+    Copyright (c) 2001-2007 Joel de Guzman
+
+    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_THROW_HPP_EAN_2008_05_18
+#define BOOST_PHOENIX_THROW_HPP_EAN_2008_05_18
+
+#include <boost/phoenix/core/actor.hpp>
+
+namespace boost { namespace phoenix
+{
+    namespace detail
+    {
+        struct throw_fun
+        {
+            typedef void result_type;
+
+            void operator()() const
+            {
+                throw;
+            }
+
+            template<typename Exception>
+            void operator()(Exception const &exception) const
+            {
+                throw exception;
+            }
+        };
+
+        typedef actor<proto::terminal<throw_fun>::type> throw_type;
+        throw_type const throw_ = {{{}}};
+    }
+
+    ////////////////////////////////////////////////////////////////////////////////////////////////
+    actor<proto::function<detail::throw_type>::type> const
+    throw_()
+    {
+        actor<proto::function<detail::throw_type>::type> that = {{detail::throw_}};
+        return that;
+    }
+
+    ////////////////////////////////////////////////////////////////////////////////////////////////
+    template<typename Expr>
+    typename proto::result_of::make_expr<
+        proto::tag::function
+      , detail::domain
+      , detail::throw_type
+      , Expr const &
+    >::type const
+    throw_(Expr const &expr)
+    {
+        return proto::implicit_expr(detail::throw_, expr);
+    }
+
+}}
+
+#endif