From a9ca707add3137cf0762ff9fa21f616a61810611 Mon Sep 17 00:00:00 2001
From: Aleksey Gurtovoy <agurtovoy@meta-comm.com>
Date: Mon, 24 Feb 2003 01:02:31 +0000
Subject: [PATCH] ETI refactoring

[SVN r17614]
---
 include/boost/mpl/aux_/is_msvc_eti_arg.hpp | 67 ++++++++++++++++++++++
 include/boost/mpl/aux_/msvc_eti_base.hpp   | 60 +++++++++++++++++++
 2 files changed, 127 insertions(+)
 create mode 100644 include/boost/mpl/aux_/is_msvc_eti_arg.hpp
 create mode 100644 include/boost/mpl/aux_/msvc_eti_base.hpp

diff --git a/include/boost/mpl/aux_/is_msvc_eti_arg.hpp b/include/boost/mpl/aux_/is_msvc_eti_arg.hpp
new file mode 100644
index 0000000..d4cbe9e
--- /dev/null
+++ b/include/boost/mpl/aux_/is_msvc_eti_arg.hpp
@@ -0,0 +1,67 @@
+//-----------------------------------------------------------------------------
+// boost mpl/aux_/is_msvc_eti_arg.hpp header file
+// See http://www.boost.org for updates, documentation, and revision history.
+//-----------------------------------------------------------------------------
+//
+// Copyright (c) 2001-03
+// Aleksey Gurtovoy
+//
+// Permission to use, copy, modify, distribute and sell this software
+// and its documentation for any purpose is hereby granted without fee, 
+// provided that the above copyright notice appears in all copies and 
+// that both the copyright notice and this permission notice appear in 
+// supporting documentation. No representations are made about the 
+// suitability of this software for any purpose. It is provided "as is" 
+// without express or implied warranty.
+
+#ifndef BOOST_MPL_AUX_IS_MSVC_ETI_ARG_HPP_INCLUDED
+#define BOOST_MPL_AUX_IS_MSVC_ETI_ARG_HPP_INCLUDED
+
+#include "boost/mpl/aux_/yes_no.hpp"
+#include "boost/mpl/aux_/config/eti.hpp"
+#include "boost/mpl/aux_/config/static_constant.hpp"
+
+namespace boost { namespace mpl { namespace aux {
+
+#if defined(BOOST_MPL_MSVC_ETI_BUG)
+
+#if defined(BOOST_MPL_MSVC_60_ETI_BUG)
+
+template< typename T >
+struct is_msvc_eti_arg
+{ 
+    BOOST_STATIC_CONSTANT(bool, value = false);
+};
+
+#else
+
+struct eti_int_convertible
+{
+    eti_int_convertible(int);
+};
+
+template< typename T >
+struct is_msvc_eti_arg
+{ 
+    static no_tag test(...);
+    static yes_tag test(eti_int_convertible);
+    static T get();
+
+    BOOST_STATIC_CONSTANT(bool, value = 
+          sizeof(test(get())) == sizeof(yes_tag)
+        );
+};
+
+#endif // BOOST_MPL_MSVC_60_ETI_BUG
+
+template<>
+struct is_msvc_eti_arg<int>
+{ 
+    BOOST_STATIC_CONSTANT(bool, value = true);
+};
+
+#endif // BOOST_MPL_MSVC_ETI_BUG
+
+}}} // namespace boost::mpl::aux
+
+#endif // BOOST_MPL_AUX_IS_MSVC_ETI_ARG_HPP_INCLUDED
diff --git a/include/boost/mpl/aux_/msvc_eti_base.hpp b/include/boost/mpl/aux_/msvc_eti_base.hpp
new file mode 100644
index 0000000..152dd16
--- /dev/null
+++ b/include/boost/mpl/aux_/msvc_eti_base.hpp
@@ -0,0 +1,60 @@
+//-----------------------------------------------------------------------------
+// boost mpl/aux_/msvc_msvc_eti_base.hpp header file
+// See http://www.boost.org for updates, documentation, and revision history.
+//-----------------------------------------------------------------------------
+//
+// Copyright (c) 2001-03
+// Aleksey Gurtovoy
+//
+// Permission to use, copy, modify, distribute and sell this software
+// and its documentation for any purpose is hereby granted without fee, 
+// provided that the above copyright notice appears in all copies and 
+// that both the copyright notice and this permission notice appear in 
+// supporting documentation. No representations are made about the 
+// suitability of this software for any purpose. It is provided "as is" 
+// without express or implied warranty.
+
+#ifndef BOOST_MPL_AUX_MSVC_ETI_BASE_HPP_INCLUDED
+#define BOOST_MPL_AUX_MSVC_ETI_BASE_HPP_INCLUDED
+
+#include "boost/mpl/aux_/config/eti.hpp"
+#include "boost/mpl/aux_/is_msvc_eti_arg.hpp"
+
+namespace boost { namespace mpl { namespace aux {
+
+#if defined(BOOST_MPL_MSVC_ETI_BUG)
+
+template< bool > struct msvc_eti_base_impl
+{
+    template< typename T > struct result_
+    {
+        typedef T type;
+    };
+};
+
+template<> struct msvc_eti_base_impl<true>
+{
+    template< typename T > struct result_
+    {
+        typedef result_ type;
+    };
+};
+
+template< typename T > struct msvc_eti_base
+    : msvc_eti_base_impl< is_msvc_eti_arg<T>::value >
+        ::template result_<T>
+{
+};
+
+#else
+
+template< typename T > struct msvc_eti_base
+{
+    typedef T type;
+};
+
+#endif // BOOST_MPL_MSVC_ETI_BUG
+
+}}} // namespace boost::mpl::aux
+
+#endif // BOOST_MPL_AUX_MSVC_ETI_BASE_HPP_INCLUDED