--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imgtools/imglib/boostlibrary/boost/mpl/aux_/begin_end_impl.hpp	Mon May 10 19:54:49 2010 +0100
@@ -0,0 +1,101 @@
+
+#ifndef BOOST_MPL_AUX_BEGIN_END_IMPL_HPP_INCLUDED
+#define BOOST_MPL_AUX_BEGIN_END_IMPL_HPP_INCLUDED
+
+// Copyright Aleksey Gurtovoy 2000-2004
+//
+// 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)
+//
+// See http://www.boost.org/libs/mpl for documentation.
+
+// $Id: begin_end_impl.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
+// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $
+// $Revision: 49267 $
+
+#include <boost/mpl/begin_end_fwd.hpp>
+#include <boost/mpl/sequence_tag_fwd.hpp>
+#include <boost/mpl/void.hpp>
+#include <boost/mpl/eval_if.hpp>
+#include <boost/mpl/aux_/has_begin.hpp>
+#include <boost/mpl/aux_/na.hpp>
+#include <boost/mpl/aux_/traits_lambda_spec.hpp>
+#include <boost/mpl/aux_/config/eti.hpp>
+
+namespace boost { namespace mpl {
+
+
+namespace aux { 
+
+template< typename Sequence > 
+struct begin_type 
+{ 
+    typedef typename Sequence::begin type; 
+};
+template< typename Sequence > 
+struct end_type
+{ 
+    typedef typename Sequence::end type; 
+};
+
+}
+
+// default implementation; conrete sequences might override it by 
+// specializing either the 'begin_impl/end_impl' or the primary 
+// 'begin/end' templates
+
+template< typename Tag >
+struct begin_impl
+{
+    template< typename Sequence > struct apply
+    {
+        typedef typename eval_if<aux::has_begin<Sequence, true_>,
+                                 aux::begin_type<Sequence>, void_>::type type;
+    };
+};
+
+template< typename Tag >
+struct end_impl
+{
+    template< typename Sequence > struct apply
+    {
+        typedef typename eval_if<aux::has_begin<Sequence, true_>,
+                                 aux::end_type<Sequence>, void_>::type type;
+    };
+};
+
+// specialize 'begin_trait/end_trait' for two pre-defined tags
+
+#   define AUX778076_IMPL_SPEC(name, tag, result) \
+template<> \
+struct name##_impl<tag> \
+{ \
+    template< typename Sequence > struct apply \
+    { \
+        typedef result type; \
+    }; \
+}; \
+/**/
+
+// a sequence with nested 'begin/end' typedefs; just query them
+AUX778076_IMPL_SPEC(begin, nested_begin_end_tag, typename Sequence::begin)
+AUX778076_IMPL_SPEC(end, nested_begin_end_tag, typename Sequence::end)
+
+// if a type 'T' does not contain 'begin/end' or 'tag' members 
+// and doesn't specialize either 'begin/end' or 'begin_impl/end_impl' 
+// templates, then we end up here
+AUX778076_IMPL_SPEC(begin, non_sequence_tag, void_)
+AUX778076_IMPL_SPEC(end, non_sequence_tag, void_)
+AUX778076_IMPL_SPEC(begin, na, void_)
+AUX778076_IMPL_SPEC(end, na, void_)
+
+#   undef AUX778076_IMPL_SPEC
+
+
+BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC_IMPL(1,begin_impl)
+BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC_IMPL(1,end_impl)
+
+}}
+
+#endif // BOOST_MPL_AUX_BEGIN_END_IMPL_HPP_INCLUDED