1 | #ifndef OT_LAYOUT_GPOS_PAIRPOS_HH |
2 | #define OT_LAYOUT_GPOS_PAIRPOS_HH |
3 | |
4 | #include "PairPosFormat1.hh" |
5 | #include "PairPosFormat2.hh" |
6 | |
7 | namespace OT { |
8 | namespace Layout { |
9 | namespace GPOS_impl { |
10 | |
11 | struct PairPos |
12 | { |
13 | protected: |
14 | union { |
15 | HBUINT16 format; /* Format identifier */ |
16 | PairPosFormat1_3<SmallTypes> format1; |
17 | PairPosFormat2_4<SmallTypes> format2; |
18 | #ifndef HB_NO_BEYOND_64K |
19 | PairPosFormat1_3<MediumTypes> format3; |
20 | PairPosFormat2_4<MediumTypes> format4; |
21 | #endif |
22 | } u; |
23 | |
24 | public: |
25 | template <typename context_t, typename ...Ts> |
26 | typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const |
27 | { |
28 | if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value (); |
29 | TRACE_DISPATCH (this, u.format); |
30 | switch (u.format) { |
31 | case 1: return_trace (c->dispatch (u.format1, std::forward<Ts> (ds)...)); |
32 | case 2: return_trace (c->dispatch (u.format2, std::forward<Ts> (ds)...)); |
33 | #ifndef HB_NO_BEYOND_64K |
34 | case 3: return_trace (c->dispatch (u.format3, std::forward<Ts> (ds)...)); |
35 | case 4: return_trace (c->dispatch (u.format4, std::forward<Ts> (ds)...)); |
36 | #endif |
37 | default:return_trace (c->default_return_value ()); |
38 | } |
39 | } |
40 | }; |
41 | |
42 | } |
43 | } |
44 | } |
45 | |
46 | #endif // OT_LAYOUT_GPOS_PAIRPOS_HH |
47 | |