/*============================================================================= | |
Copyright (c) 2001-2006 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) | |
==============================================================================*/ | |
#if !defined(FUSION_BUILD_CONS_09232005_1222) | |
#define FUSION_BUILD_CONS_09232005_1222 | |
#include <boost/fusion/container/list/cons.hpp> | |
#include <boost/fusion/iterator/equal_to.hpp> | |
#include <boost/fusion/iterator/next.hpp> | |
#include <boost/fusion/iterator/value_of.hpp> | |
#include <boost/fusion/iterator/deref.hpp> | |
namespace boost { namespace fusion { namespace detail | |
{ | |
template < | |
typename First | |
, typename Last | |
, bool is_empty = result_of::equal_to<First, Last>::value> | |
struct build_cons; | |
template <typename First, typename Last> | |
struct build_cons<First, Last, true> | |
{ | |
typedef nil type; | |
static nil | |
call(First const&, Last const&) | |
{ | |
return nil(); | |
} | |
}; | |
template <typename First, typename Last> | |
struct build_cons<First, Last, false> | |
{ | |
typedef | |
build_cons<typename result_of::next<First>::type, Last> | |
next_build_cons; | |
typedef cons< | |
typename result_of::value_of<First>::type | |
, typename next_build_cons::type> | |
type; | |
static type | |
call(First const& f, Last const& l) | |
{ | |
typename result_of::deref<First>::type v = *f; | |
return type(v, next_build_cons::call(fusion::next(f), l)); | |
} | |
}; | |
}}} | |
#endif |