feedc0de/boost_fusion
1
0
Fork 0
forked from boostorg/fusion
Code Pull Requests Activity

patches from tongari: allow custom Associative Sequence which doesn't have fusion::pair

Browse Source 
as elements.

[SVN r83455]
This commit is contained in:
Joel de Guzman
2013-03-16 07:28:23 +00:00
parent d354c5183b
commit b36426c8e3
10 changed files with 823 additions and 774 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
include/boost/fusion/container/map/convert.hpp
View File

@ -9,6 +9,33 @@
#include <boost/fusion/container/map/map.hpp>
namespace boost { namespace fusion { namespace detail
{
template <typename It, bool is_assoc>
struct pair_from
{
typedef typename result_of::value_of<It>::type type;
static inline type call(It const& it)
{
return *it;
}
};
template <typename It>
struct pair_from<It, true>
{
typedef typename result_of::key_of<It>::type key_type;
typedef typename result_of::value_of_data<It>::type data_type;
typedef typename fusion::pair<key_type, data_type> type;
static inline type call(It const& it)
{
return type(deref_data(it));
}
};
}}}
///////////////////////////////////////////////////////////////////////////////
// Without variadics, we will use the PP version
///////////////////////////////////////////////////////////////////////////////
@ -30,6 +57,9 @@ namespace boost { namespace fusion
detail::build_map<
typename result_of::begin<Sequence>::type
, typename result_of::end<Sequence>::type
, is_base_of<
associative_tag
, typename traits::category_of<Sequence>::type>::value
>
{
};