From 2249cf7c7ff6a7249e6961cdee22e8b40679b5ea Mon Sep 17 00:00:00 2001
From: take_cheeze <takechi101010@gmail.com>
Date: Fri, 18 Jul 2014 22:30:07 +0900
Subject: [PATCH] Implement `Symbol#slice` and `Symbol#[]` in mruby-symbol-ext.

---
 mrbgems/mruby-symbol-ext/mrblib/symbol.rb |  6 ++++++
 mrbgems/mruby-symbol-ext/test/symbol.rb   | 10 ++++++++++
 2 files changed, 16 insertions(+)

diff --git a/mrbgems/mruby-symbol-ext/mrblib/symbol.rb b/mrbgems/mruby-symbol-ext/mrblib/symbol.rb
index 1e3d24b80..5c5e6000f 100644
--- a/mrbgems/mruby-symbol-ext/mrblib/symbol.rb
+++ b/mrbgems/mruby-symbol-ext/mrblib/symbol.rb
@@ -62,4 +62,10 @@ class Symbol
     self.length == 0
   end
 
+  def slice *args
+    to_s.slice(*args).to_sym
+  end
+
+  alias [] slice
+
 end
diff --git a/mrbgems/mruby-symbol-ext/test/symbol.rb b/mrbgems/mruby-symbol-ext/test/symbol.rb
index 6070d1418..a82f47a3f 100644
--- a/mrbgems/mruby-symbol-ext/test/symbol.rb
+++ b/mrbgems/mruby-symbol-ext/test/symbol.rb
@@ -46,3 +46,13 @@ end
 assert('Symbol#intern') do
   assert_equal :test, :test.intern
 end
+
+assert('Symbol#slice') do
+  assert_equal :a, :abc.slice(0)
+  assert_equal :ab, :abc.slice(0, 2)
+end
+
+assert('Symbol#[]') do
+  assert_equal :a, :abc[0]
+  assert_equal :ab, :abc[0, 2]
+end