From d1f58e5979bb8227e1136fbf72facce7c2e9bb7c Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Fri, 8 Jul 2022 13:25:07 -0600
Subject: [PATCH] [>64k:layout:(Chain)Context] Implement format 5

Implements part of https://github.com/be-fonts/boring-expansion-spec/issues/34

Subset does NOT lower format.
---
 src/hb-ot-layout-gsubgpos.hh | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/hb-ot-layout-gsubgpos.hh b/src/hb-ot-layout-gsubgpos.hh
index b78a25564..0e312e2c5 100644
--- a/src/hb-ot-layout-gsubgpos.hh
+++ b/src/hb-ot-layout-gsubgpos.hh
@@ -2595,6 +2595,9 @@ struct Context
     case 1: return_trace (c->dispatch (u.format1, std::forward<Ts> (ds)...));
     case 2: return_trace (c->dispatch (u.format2, std::forward<Ts> (ds)...));
     case 3: return_trace (c->dispatch (u.format3, std::forward<Ts> (ds)...));
+#ifndef HB_NO_BORING_EXPANSION
+    case 5: return_trace (c->dispatch (u.format5, std::forward<Ts> (ds)...));
+#endif
     default:return_trace (c->default_return_value ());
     }
   }
@@ -2605,6 +2608,9 @@ struct Context
   ContextFormat1		format1;
   ContextFormat2_5<SmallTypes>	format2;
   ContextFormat3		format3;
+#ifndef HB_NO_BORING_EXPANSION
+  ContextFormat2_5<MediumTypes>	format5;
+#endif
   } u;
 };
 
@@ -3750,6 +3756,9 @@ struct ChainContext
     case 1: return_trace (c->dispatch (u.format1, std::forward<Ts> (ds)...));
     case 2: return_trace (c->dispatch (u.format2, std::forward<Ts> (ds)...));
     case 3: return_trace (c->dispatch (u.format3, std::forward<Ts> (ds)...));
+#ifndef HB_NO_BORING_EXPANSION
+    case 5: return_trace (c->dispatch (u.format5, std::forward<Ts> (ds)...));
+#endif
     default:return_trace (c->default_return_value ());
     }
   }
@@ -3760,6 +3769,9 @@ struct ChainContext
   ChainContextFormat1			format1;
   ChainContextFormat2_5<SmallTypes>	format2;
   ChainContextFormat3			format3;
+#ifndef HB_NO_BORING_EXPANSION
+  ChainContextFormat2_5<MediumTypes>	format5;
+#endif
   } u;
 };