imgtools/imglib/boostlibrary/boost/mpl/for_each.hpp
changeset 0 044383f39525
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imgtools/imglib/boostlibrary/boost/mpl/for_each.hpp	Tue Oct 27 16:36:35 2009 +0000
@@ -0,0 +1,116 @@
+
+#ifndef BOOST_MPL_FOR_EACH_HPP_INCLUDED
+#define BOOST_MPL_FOR_EACH_HPP_INCLUDED
+
+// Copyright Aleksey Gurtovoy 2000-2008
+//
+// 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: for_each.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/is_sequence.hpp>
+#include <boost/mpl/begin_end.hpp>
+#include <boost/mpl/apply.hpp>
+#include <boost/mpl/bool.hpp>
+#include <boost/mpl/next_prior.hpp>
+#include <boost/mpl/deref.hpp>
+#include <boost/mpl/identity.hpp>
+#include <boost/mpl/assert.hpp>
+#include <boost/mpl/aux_/unwrap.hpp>
+
+#include <boost/type_traits/is_same.hpp>
+#include <boost/utility/value_init.hpp>
+
+namespace boost { namespace mpl {
+
+namespace aux {
+
+template< bool done = true >
+struct for_each_impl
+{
+    template<
+          typename Iterator
+        , typename LastIterator
+        , typename TransformFunc
+        , typename F
+        >
+    static void execute(
+          Iterator*
+        , LastIterator*
+        , TransformFunc*
+        , F
+        )
+    {
+    }
+};
+
+template<>
+struct for_each_impl<false>
+{
+    template<
+          typename Iterator
+        , typename LastIterator
+        , typename TransformFunc
+        , typename F
+        >
+    static void execute(
+          Iterator*
+        , LastIterator*
+        , TransformFunc* 
+        , F f
+        )
+    {
+        typedef typename deref<Iterator>::type item;
+        typedef typename apply1<TransformFunc,item>::type arg;
+    
+        // dwa 2002/9/10 -- make sure not to invoke undefined behavior
+        // when we pass arg.
+        value_initialized<arg> x;
+        aux::unwrap(f, 0)(boost::get(x));
+        
+        typedef typename mpl::next<Iterator>::type iter;
+        for_each_impl<boost::is_same<iter,LastIterator>::value>
+            ::execute((iter*)0, (LastIterator*)0, (TransformFunc*)0, f);
+    }
+};
+
+} // namespace aux
+
+// agurt, 17/mar/02: pointer default parameters are necessary to workaround 
+// MSVC 6.5 function template signature's mangling bug
+template<
+      typename Sequence
+    , typename TransformOp
+    , typename F
+    >
+inline
+void for_each(F f, Sequence* = 0, TransformOp* = 0)
+{
+    BOOST_MPL_ASSERT(( is_sequence<Sequence> ));
+
+    typedef typename begin<Sequence>::type first;
+    typedef typename end<Sequence>::type last;
+
+    aux::for_each_impl< boost::is_same<first,last>::value >
+        ::execute((first*)0, (last*)0, (TransformOp*)0, f);
+}
+
+template<
+      typename Sequence
+    , typename F
+    >
+inline
+void for_each(F f, Sequence* = 0)
+{
+    for_each<Sequence, identity<> >(f);
+}
+
+}}
+
+#endif // BOOST_MPL_FOR_EACH_HPP_INCLUDED