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mrange: range cast

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This commit is contained in:
Christian Zimmermann 2023-03-12 04:30:42 +01:00
parent abb47cbb06
commit bea9add008
2 changed files with 17 additions and 0 deletions
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11
src/include/ranges/mrange.cc.h
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@ -651,6 +651,17 @@ namespace CNORXZ
return MRangeFactory<Ranges...>(std::make_tuple(rs...)).create(); return MRangeFactory<Ranges...>(std::make_tuple(rs...)).create();
} }
template <class... Ranges>
Sptr<MRange<Ranges...>> RangeCast<MRange<Ranges...>>::func(const RangePtr& r)
{
CXZ_ASSERT(r->dim() == sizeof...(Ranges), "expect range of dimension "
<< sizeof...(Ranges) << ", got " << r->dim());
return std::dynamic_pointer_cast<MRange<Ranges...>>( MRangeFactory
( iter<0,sizeof...(Ranges)>
( [&](auto i) {
return rangeCast<typename std::tuple_element<i,Tuple<Ranges...>>::type> (r->sub(i)); },
[](const auto&... e){ return std::make_tuple( e... ); } ) ).create() );
}
} }
#endif #endif

6
src/include/ranges/mrange.h
View file

@ -203,6 +203,12 @@ namespace CNORXZ
template <class... Ranges> template <class... Ranges>
RangePtr mrange(const Sptr<Ranges>&... rs); RangePtr mrange(const Sptr<Ranges>&... rs);
template <class... Ranges>
struct RangeCast<MRange<Ranges...>>
{
static Sptr<MRange<Ranges...>> func(const RangePtr& r);
};
} }
#endif #endif