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-rw-r--r--gfx/harfbuzz/src/OT/glyf/composite-iter.hh68
1 files changed, 68 insertions, 0 deletions
diff --git a/gfx/harfbuzz/src/OT/glyf/composite-iter.hh b/gfx/harfbuzz/src/OT/glyf/composite-iter.hh
new file mode 100644
index 0000000000..d05701f3d1
--- /dev/null
+++ b/gfx/harfbuzz/src/OT/glyf/composite-iter.hh
@@ -0,0 +1,68 @@
+#ifndef OT_GLYF_COMPOSITE_ITER_HH
+#define OT_GLYF_COMPOSITE_ITER_HH
+
+
+#include "../../hb.hh"
+
+
+namespace OT {
+namespace glyf_impl {
+
+
+template <typename CompositeGlyphRecord>
+struct composite_iter_tmpl : hb_iter_with_fallback_t<composite_iter_tmpl<CompositeGlyphRecord>,
+ const CompositeGlyphRecord &>
+{
+ typedef const CompositeGlyphRecord *__item_t__;
+ composite_iter_tmpl (hb_bytes_t glyph_, __item_t__ current_) :
+ glyph (glyph_), current (nullptr), current_size (0)
+ {
+ set_current (current_);
+ }
+
+ composite_iter_tmpl () : glyph (hb_bytes_t ()), current (nullptr), current_size (0) {}
+
+ const CompositeGlyphRecord & __item__ () const { return *current; }
+ bool __more__ () const { return current; }
+ void __next__ ()
+ {
+ if (!current->has_more ()) { current = nullptr; return; }
+
+ set_current (&StructAtOffset<CompositeGlyphRecord> (current, current_size));
+ }
+ composite_iter_tmpl __end__ () const { return composite_iter_tmpl (); }
+ bool operator != (const composite_iter_tmpl& o) const
+ { return current != o.current; }
+
+
+ void set_current (__item_t__ current_)
+ {
+ if (!glyph.check_range (current_, CompositeGlyphRecord::min_size))
+ {
+ current = nullptr;
+ current_size = 0;
+ return;
+ }
+ unsigned size = current_->get_size ();
+ if (!glyph.check_range (current_, size))
+ {
+ current = nullptr;
+ current_size = 0;
+ return;
+ }
+
+ current = current_;
+ current_size = size;
+ }
+
+ private:
+ hb_bytes_t glyph;
+ __item_t__ current;
+ unsigned current_size;
+};
+
+
+} /* namespace glyf_impl */
+} /* namespace OT */
+
+#endif /* OT_GLYF_COMPOSITE_ITER_HH */