From 2bcea52b81037eb0950b68b58a159952f0ab738a Mon Sep 17 00:00:00 2001
From: Lucas Bajolet <r4pass@hotmail.com>
Date: Tue, 8 Dec 2015 13:22:20 -0500
Subject: [PATCH] lib/core: Have `is_empty` work with `_bytelen` instead of
 `length` for speed

Signed-off-by: Lucas Bajolet <r4pass@hotmail.com>
---
 lib/core/text/ropes.nit |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/core/text/ropes.nit b/lib/core/text/ropes.nit
index 84afa5b..1a91e00 100644
--- a/lib/core/text/ropes.nit
+++ b/lib/core/text/ropes.nit
@@ -115,6 +115,8 @@ private class Concat
 		_bytelen = l.bytelen + r.bytelen
 	end
 
+	redef fun is_empty do return _bytelen == 0
+
 	redef fun output do
 		_left.output
 		_right.output
-- 
1.7.9.5