From e23eb8dcf560e3552c310a993dfd65ba811afe19 Mon Sep 17 00:00:00 2001
From: Akira Matsuda <ronnie@dio.jp>
Date: Wed, 9 Dec 2020 11:06:01 +0900
Subject: [PATCH] Use Refinements to define dclone methods that are used only
 in xpath_parser.rb

---
 lib/rexml/xpath_parser.rb | 66 +++++++++++++++++++++------------------
 1 file changed, 36 insertions(+), 30 deletions(-)

diff --git a/lib/rexml/xpath_parser.rb b/lib/rexml/xpath_parser.rb
index b9897254..d8b88e7a 100644
--- a/lib/rexml/xpath_parser.rb
+++ b/lib/rexml/xpath_parser.rb
@@ -7,39 +7,45 @@
 require_relative 'attribute'
 require_relative 'parsers/xpathparser'
 
-class Object
-  # provides a unified +clone+ operation, for REXML::XPathParser
-  # to use across multiple Object types
-  def dclone
-    clone
-  end
-end
-class Symbol
-  # provides a unified +clone+ operation, for REXML::XPathParser
-  # to use across multiple Object types
-  def dclone ; self ; end
-end
-class Integer
-  # provides a unified +clone+ operation, for REXML::XPathParser
-  # to use across multiple Object types
-  def dclone ; self ; end
-end
-class Float
-  # provides a unified +clone+ operation, for REXML::XPathParser
-  # to use across multiple Object types
-  def dclone ; self ; end
-end
-class Array
-  # provides a unified +clone+ operation, for REXML::XPathParser
-  # to use across multiple Object+ types
-  def dclone
-    klone = self.clone
-    klone.clear
-    self.each{|v| klone << v.dclone}
-    klone
+module REXML
+  module DClonable
+    refine Object do
+      # provides a unified +clone+ operation, for REXML::XPathParser
+      # to use across multiple Object types
+      def dclone
+        clone
+      end
+    end
+    refine Symbol do
+      # provides a unified +clone+ operation, for REXML::XPathParser
+      # to use across multiple Object types
+      def dclone ; self ; end
+    end
+    refine Integer do
+      # provides a unified +clone+ operation, for REXML::XPathParser
+      # to use across multiple Object types
+      def dclone ; self ; end
+    end
+    refine Float do
+      # provides a unified +clone+ operation, for REXML::XPathParser
+      # to use across multiple Object types
+      def dclone ; self ; end
+    end
+    refine Array do
+      # provides a unified +clone+ operation, for REXML::XPathParser
+      # to use across multiple Object+ types
+      def dclone
+        klone = self.clone
+        klone.clear
+        self.each{|v| klone << v.dclone}
+        klone
+      end
+    end
   end
 end
 
+using REXML::DClonable
+
 module REXML
   # You don't want to use this class.  Really.  Use XPath, which is a wrapper
   # for this class.  Believe me.  You don't want to poke around in here.