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Better deque conversion

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[SVN r82669]
This commit is contained in:
Joel de Guzman
2013-01-31 15:31:28 +00:00
parent 5a520585d8
commit 9dcdfa323f
1 changed files with 24 additions and 5 deletions
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29
include/boost/fusion/container/deque/convert.hpp
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@ -43,6 +43,21 @@ namespace boost { namespace fusion
}
};
template <typename T, typename Rest>
struct push_front_deque;
template <typename T, typename ...Rest>
struct push_front_deque<T, deque<Rest...>>
{
typedef deque<T, Rest...> type;
static type
call(T const& first, deque<Rest...> const& rest)
{
return type(front_extended_deque<deque<Rest...>, T>(rest, first));
}
};
template <typename First, typename Last>
struct build_deque<First, Last, false>
{
@ -50,16 +65,19 @@ namespace boost { namespace fusion
build_deque<typename result_of::next<First>::type, Last>
next_build_deque;
typedef front_extended_deque<
typename next_build_deque::type
, typename result_of::value_of<First>::type>
type;
typedef push_front_deque<
typename result_of::value_of<First>::type
, typename next_build_deque::type>
push_front;
typedef typename push_front::type type;
static type
call(First const& f, Last const& l)
{
typename result_of::value_of<First>::type v = *f;
return type(next_build_deque::call(fusion::next(f), l), v);
return push_front::call(
v, next_build_deque::call(fusion::next(f), l));
}
};
}
@ -102,6 +120,7 @@ namespace boost { namespace fusion
#include <boost/fusion/sequence/intrinsic/begin.hpp>
#include <boost/fusion/sequence/intrinsic/size.hpp>
#include <boost/fusion/container/deque/detail/pp_as_deque.hpp>
#include <boost/fusion/container/deque/front_extended_deque.hpp>
namespace boost { namespace fusion
{