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[iter] Add hb_take() specialization for arrays

This commit is contained in:
Behdad Esfahbod 2019-08-31 14:36:44 -05:00
parent 398b296f3b
commit 5828d8e83c
1 changed files with 11 additions and 0 deletions
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11
src/hb-iter.hh
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@ -156,6 +156,7 @@ using hb_item_type = decltype (*hb_deref (hb_declval (Iterable)).iter ());
template <typename> struct hb_array_t;
template <typename> struct hb_sorted_array_t;
struct
{
@ -753,6 +754,16 @@ struct
hb_requires (hb_is_iterable (Iterable))>
auto operator () (Iterable&& it, unsigned count) const HB_AUTO_RETURN
( hb_zip (hb_range (count), it) | hb_map (hb_second) )
/* Specialization arrays. */
template <typename Type> inline hb_array_t<Type>
operator () (hb_array_t<Type> array, unsigned count) const
{ return array.sub_array (0, count); }
template <typename Type> inline hb_sorted_array_t<Type>
operator () (hb_sorted_array_t<Type> array, unsigned count) const
{ return array.sub_array (0, count); }
}
HB_FUNCOBJ (hb_take);