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[set] Implement unified iterator

This commit is contained in:
Behdad Esfahbod 2018-12-21 20:06:17 -05:00
parent 4911e67d2d
commit fc35919d01
1 changed files with 20 additions and 0 deletions
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20
src/hb-set.hh
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@ -668,6 +668,26 @@ struct hb_set_t
static const hb_codepoint_t INVALID = HB_SET_VALUE_INVALID;
/*
* Iterator implementation.
*/
struct iter_t
{
iter_t (const hb_set_t &s_) : s (s_), v (INVALID) { __next__ (); }
typedef hb_codepoint_t __item_type__;
hb_codepoint_t __item__ () const { return v; }
bool __more__ () const { return v != INVALID; }
void __next__ () { s.next (&v); }
void __prev__ () { s.previous (&v); }
protected:
const hb_set_t &s;
hb_codepoint_t v;
};
iter_t iter () { return iter_t (*this); }
operator iter_t () { return iter (); }
protected:
page_t *page_for_insert (hb_codepoint_t g)