benchmarks/string: Added benchmark for Array.to_s

[nit.git] / benchmarks / strings / array_to_s_vars / array_to_s_rope.nit

diff --git a/benchmarks/strings/array_to_s_vars/array_to_s_rope.nit b/benchmarks/strings/array_to_s_vars/array_to_s_rope.nit
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+++ b/benchmarks/strings/array_to_s_vars/array_to_s_rope.nit
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+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# This file is free software, which comes along with NIT.  This software is
+# distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without  even  the implied warranty of  MERCHANTABILITY or  FITNESS FOR A
+# PARTICULAR PURPOSE.  You can modify it is you want,  provided this header
+# is kept unaltered, and a notification of the changes is added.
+# You  are  allowed  to  redistribute it and sell it, alone or is a part of
+# another product.
+
+# Implementation of Array::to_s with a Rope exclusively
+#
+# To be used as a Mixin at compile-time for benchmarking purposes.
+module array_to_s_rope
+
+redef class Array[E]
+
+       redef fun to_s do
+               var i = 1
+               var l = length
+               if l == 0 then return ""
+               var s: String = new RopeString.from(self[0].to_s)
+               var its = _items
+               while i < l do
+                       var e = its[i]
+                       if e != null then s += e.to_s
+                       i += 1
+               end
+               return s
+       end
+end