From d58e248df62457bdc8a5bab743e5de26c6fc57be Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Thu, 29 Aug 2019 15:23:48 -0700
Subject: [PATCH] [array] Add truncate() method

---
 src/hb-array.hh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/hb-array.hh b/src/hb-array.hh
index 96d2e0a97..51994947e 100644
--- a/src/hb-array.hh
+++ b/src/hb-array.hh
@@ -181,6 +181,8 @@ struct hb_array_t : hb_iter_with_fallback_t<hb_array_t<Type>, Type&>
   hb_array_t sub_array (unsigned int start_offset, unsigned int seg_count) const
   { return sub_array (start_offset, &seg_count); }
 
+  hb_array_t truncate (unsigned length) const { return sub_array (0, length); }
+
   template <typename T,
 	    unsigned P = sizeof (Type),
 	    hb_enable_if (P == 1)>
@@ -263,6 +265,8 @@ struct hb_sorted_array_t :
   hb_sorted_array_t sub_array (unsigned int start_offset, unsigned int seg_count) const
   { return sub_array (start_offset, &seg_count); }
 
+  hb_sorted_array_t truncate (unsigned length) const { return sub_array (0, length); }
+
   template <typename T>
   Type *bsearch (const T &x, Type *not_found = nullptr)
   {