Pull in some dependencies of Boost.Range.

boost/mpl/count_if.hpp

@@ -0,0 +1,79 @@
+
+#ifndef BOOST_MPL_COUNT_IF_HPP_INCLUDED
+#define BOOST_MPL_COUNT_IF_HPP_INCLUDED
+
+// Copyright Aleksey Gurtovoy 2000-2002
+//
+// 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.
+
+// $Id$
+// $Date$
+// $Revision$
+
+#include <boost/mpl/fold.hpp>
+#include <boost/mpl/next.hpp>
+#include <boost/mpl/integral_c.hpp>
+#include <boost/mpl/identity.hpp>
+#include <boost/mpl/eval_if.hpp>
+#include <boost/mpl/apply.hpp>
+#include <boost/mpl/aux_/msvc_eti_base.hpp>
+#include <boost/mpl/aux_/na_spec.hpp>
+#include <boost/mpl/aux_/lambda_support.hpp>
+#include <boost/mpl/aux_/config/forwarding.hpp>
+
+namespace boost { namespace mpl {
+
+namespace aux {
+
+template< typename Predicate >
+struct next_if
+{
+    template<
+          typename N
+        , typename T
+        >
+    struct apply
+#if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
+        : eval_if<
+              typename apply1<Predicate,T>::type
+            , next<N>
+            , identity<N>
+            >
+    {
+#else
+    {
+        typedef typename eval_if<
+              typename apply1<Predicate,T>::type
+            , next<N>
+            , identity<N>
+            >::type type;
+#endif
+    };
+};
+
+} // namespace aux
+
+
+template<
+      typename BOOST_MPL_AUX_NA_PARAM(Sequence)
+    , typename BOOST_MPL_AUX_NA_PARAM(Predicate)
+    >
+struct count_if
+    : aux::msvc_eti_base< typename fold<
+          Sequence
+        , integral_c<unsigned long,0>
+        , protect< aux::next_if<Predicate> >
+        >::type >
+{
+    BOOST_MPL_AUX_LAMBDA_SUPPORT(2,count_if,(Sequence,Predicate))
+};
+
+BOOST_MPL_AUX_NA_SPEC(2, count_if)
+
+}}
+
+#endif // BOOST_MPL_COUNT_IF_HPP_INCLUDED