composite-iter.hh (1648B)
1 #ifndef OT_GLYF_COMPOSITE_ITER_HH 2 #define OT_GLYF_COMPOSITE_ITER_HH 3 4 5 #include "../../hb.hh" 6 7 8 namespace OT { 9 namespace glyf_impl { 10 11 12 template <typename CompositeGlyphRecord> 13 struct composite_iter_tmpl : hb_iter_with_fallback_t<composite_iter_tmpl<CompositeGlyphRecord>, 14 const CompositeGlyphRecord &> 15 { 16 typedef const CompositeGlyphRecord *__item_t__; 17 composite_iter_tmpl (hb_bytes_t glyph_, __item_t__ current_) : 18 glyph (glyph_), current (nullptr), current_size (0) 19 { 20 set_current (current_); 21 } 22 23 composite_iter_tmpl () : glyph (hb_bytes_t ()), current (nullptr), current_size (0) {} 24 25 const CompositeGlyphRecord & __item__ () const { return *current; } 26 bool __more__ () const { return current; } 27 void __next__ () 28 { 29 if (!current->has_more ()) { current = nullptr; return; } 30 31 set_current (&StructAtOffset<CompositeGlyphRecord> (current, current_size)); 32 } 33 composite_iter_tmpl __end__ () const { return composite_iter_tmpl (); } 34 bool operator != (const composite_iter_tmpl& o) const 35 { return current != o.current; } 36 37 38 void set_current (__item_t__ current_) 39 { 40 if (!glyph.check_range (current_, CompositeGlyphRecord::min_size)) 41 { 42 current = nullptr; 43 current_size = 0; 44 return; 45 } 46 unsigned size = current_->get_size (); 47 if (!glyph.check_range (current_, size)) 48 { 49 current = nullptr; 50 current_size = 0; 51 return; 52 } 53 54 current = current_; 55 current_size = size; 56 } 57 58 private: 59 hb_bytes_t glyph; 60 __item_t__ current; 61 unsigned current_size; 62 }; 63 64 65 } /* namespace glyf_impl */ 66 } /* namespace OT */ 67 68 #endif /* OT_GLYF_COMPOSITE_ITER_HH */