From: Lucas Bajolet <r4pass@hotmail.com>
Date: Fri, 7 Mar 2014 18:54:52 +0000 (-0500)
Subject: stdlib/strings: Added empty method to unify the production of an empty text.
X-Git-Tag: v0.6.5~7^2~3^2~15
X-Git-Url: http://nitlanguage.org?ds=sidebyside

stdlib/strings: Added empty method to unify the production of an empty text.

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

diff --git a/lib/standard/string.nit b/lib/standard/string.nit
index d808851..d3b0eb9 100644
--- a/lib/standard/string.nit
+++ b/lib/standard/string.nit
@@ -60,6 +60,9 @@ abstract class Text
 	#	assert not "foo".is_empty
 	fun is_empty: Bool do return self.length == 0
 
+	# Returns an empty Text of the right type
+	fun empty: SELFTYPE is abstract
+
 	# Gets the first char of the Text
 	#
 	# DEPRECATED : Use self.chars.first instead
@@ -624,6 +627,8 @@ class String
 		return new String.with_infos(items, to - realFrom + 1, realFrom, to)
 	end
 
+	redef fun empty do return "".as(String)
+
 	redef fun to_upper: String
 	do
 		var outstr = calloc_string(self.length + 1)
@@ -987,6 +992,8 @@ class FlatBuffer
 
 	redef fun clear do length = 0
 
+	redef fun empty do return new FlatBuffer
+
 	redef fun enlarge(cap)
 	do
 		var c = capacity