From 1e8994221fb5cfdb1902d5249c7a75cde6d6e3c8 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Sat, 24 Nov 2018 23:38:06 -0500
Subject: [PATCH] Add hb_sanitize_with_object_t

Context manager.
---
 src/hb-machinery.hh | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/hb-machinery.hh b/src/hb-machinery.hh
index 7457a099e..56e279e6c 100644
--- a/src/hb-machinery.hh
+++ b/src/hb-machinery.hh
@@ -480,6 +480,23 @@ struct hb_sanitize_context_t :
   bool  num_glyphs_set;
 };
 
+struct hb_sanitize_with_object_t
+{
+  template <typename T = hb_sanitize_context_t::dummy_get_size_t>
+  inline hb_sanitize_with_object_t (hb_sanitize_context_t *c,
+				    const T& obj) : c (c)
+  {
+    c->set_object (obj);
+  }
+  inline ~hb_sanitize_with_object_t (void)
+  {
+    c->set_object ();
+  }
+
+  private:
+  hb_sanitize_context_t *c;
+};
+
 
 /*
  * Serialize