From: Lucas Bajolet <r4pass@hotmail.com>
Date: Tue, 8 Dec 2015 18:22:20 +0000 (-0500)
Subject: lib/core: Have `is_empty` work with `_bytelen` instead of `length` for speed
X-Git-Tag: v0.8~18^2~5
X-Git-Url: http://nitlanguage.org

lib/core: Have `is_empty` work with `_bytelen` instead of `length` for speed

Signed-off-by: Lucas Bajolet <r4pass@hotmail.com>
---

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