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[iter/meta] Add hb_is_sorted_iterator()

This commit is contained in:
Behdad Esfahbod 2018-12-30 19:12:06 -05:00
parent 92f25db1e8
commit 93615b9598
1 changed files with 12 additions and 4 deletions
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16
src/hb-iter.hh
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@ -173,7 +173,7 @@ struct hb_is_iterable { enum { value = _hb_is_iterable<T, hb_true_t>::value }; }
#define hb_is_iterable(Iterable) hb_is_iterable<Iterable>::value #define hb_is_iterable(Iterable) hb_is_iterable<Iterable>::value
/* hb_is_iterator() */ /* hb_is_iterator() / hb_is_sorted_iterator() */
template<typename Iter = void, typename Item = void> char _hb_is_iterator (...) {}; template<typename Iter = void, typename Item = void> char _hb_is_iterator (...) {};
template<typename Iter, typename Item> int _hb_is_iterator (hb_iter_t<Iter, Item> *) {}; template<typename Iter, typename Item> int _hb_is_iterator (hb_iter_t<Iter, Item> *) {};
@ -181,13 +181,21 @@ template<typename Iter, typename Item> int _hb_is_iterator (hb_iter_t<Iter, cons
template<typename Iter, typename Item> int _hb_is_iterator (hb_iter_t<Iter, Item&> *) {}; template<typename Iter, typename Item> int _hb_is_iterator (hb_iter_t<Iter, Item&> *) {};
template<typename Iter, typename Item> int _hb_is_iterator (hb_iter_t<Iter, const Item&> *) {}; template<typename Iter, typename Item> int _hb_is_iterator (hb_iter_t<Iter, const Item&> *) {};
static_assert (sizeof (char) != sizeof (int), ""); static_assert (sizeof (char) != sizeof (int), "");
template<typename Iter, typename Item> template<typename Iter, typename Item>
struct hb_is_iterator { enum { struct hb_is_iterator { enum {
value = sizeof (int) == sizeof (_hb_is_iterator (hb_declval<Iter*> ())) value = sizeof (int) == sizeof (_hb_is_iterator (hb_declval<Iter*> ())) }; };
}; };
#define hb_is_iterator(Iter, Item) hb_is_iterator<Iter, Item>::value #define hb_is_iterator(Iter, Item) hb_is_iterator<Iter, Item>::value
template<typename Iter = void, typename Item = void> char _hb_is_sorted_iterator (...) {};
template<typename Iter, typename Item> int _hb_is_sorted_iterator (hb_sorted_iter_t<Iter, Item> *) {};
template<typename Iter, typename Item> int _hb_is_sorted_iterator (hb_sorted_iter_t<Iter, const Item> *) {};
template<typename Iter, typename Item> int _hb_is_sorted_iterator (hb_sorted_iter_t<Iter, Item&> *) {};
template<typename Iter, typename Item> int _hb_is_sorted_iterator (hb_sorted_iter_t<Iter, const Item&> *) {};
static_assert (sizeof (char) != sizeof (int), "");
template<typename Iter, typename Item>
struct hb_is_sorted_iterator { enum {
value = sizeof (int) == sizeof (_hb_is_sorted_iterator (hb_declval<Iter*> ())) }; };
#define hb_is_sorted_iterator(Iter, Item) hb_is_sorted_iterator<Iter, Item>::value
/* /*
* Algorithms operating on iterators or iteratables. * Algorithms operating on iterators or iteratables.