* lib/rexml/source.rb (REXML::SourceFactory::SourceFactory): more

  duck typed.  better performance on JRuby.
  http://headius.blogspot.com/2007/10/another-performance-discovery-rexml.html

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13737 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 7 insertions, 6 deletions

diff --git a/lib/rexml/source.rb b/lib/rexml/source.rb
index bc99c0ed6a..659bcdc195 100644
--- a/lib/rexml/source.rb
+++ b/lib/rexml/source.rb
@@ -7,13 +7,14 @@ module REXML
     # @param arg Either a String, or an IO
     # @return a Source, or nil if a bad argument was given
     def SourceFactory::create_from(arg)
-      if arg.kind_of? String
-        Source.new(arg)
-      elsif arg.respond_to? :read and
-            arg.respond_to? :readline and
-            arg.respond_to? :nil? and
-            arg.respond_to? :eof?
+      if arg.respond_to? :read and
+          arg.respond_to? :readline and
+          arg.respond_to? :nil? and
+          arg.respond_to? :eof?
         IOSource.new(arg)
+      elsif arg.respond_to? :to_str
+        require 'stringio'
+        IOSource.new(StringIO.new(arg))
       elsif arg.kind_of? Source
         arg
       else