[layout] Refactor Lookup::dispatch()
diff --git a/src/hb-ot-layout-common-private.hh b/src/hb-ot-layout-common-private.hh
index 9dfac67..e1437fc 100644
--- a/src/hb-ot-layout-common-private.hh
+++ b/src/hb-ot-layout-common-private.hh
@@ -37,6 +37,12 @@
namespace OT {
+#define TRACE_DISPATCH(this, format) \
+ hb_auto_trace_t<context_t::max_debug_depth, typename context_t::return_t> trace \
+ (&c->debug_depth, c->get_name (), this, HB_FUNC, \
+ "format %d", (int) format);
+
+
#define NOT_COVERED ((unsigned int) -1)
#define MAX_NESTING_LEVEL 8
#define MAX_CONTEXT_LENGTH 64
@@ -598,6 +604,20 @@
return flag;
}
+ template <typename SubTableType, typename context_t>
+ inline typename context_t::return_t dispatch (context_t *c) const
+ {
+ unsigned int lookup_type = get_type ();
+ TRACE_DISPATCH (this, lookup_type);
+ unsigned int count = get_subtable_count ();
+ for (unsigned int i = 0; i < count; i++) {
+ typename context_t::return_t r = get_subtable<SubTableType> (i).dispatch (c, lookup_type);
+ if (c->stop_sublookup_iteration (r))
+ return TRACE_RETURN (r);
+ }
+ return TRACE_RETURN (c->default_return_value ());
+ }
+
inline bool serialize (hb_serialize_context_t *c,
unsigned int lookup_type,
uint32_t lookup_props,
