* ext/psych/lib/psych/deprecated.rb: supporting detect_implicit method

* test/psych/test_deprecated.rb: ditto

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27478 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/ext/psych/lib/psych/deprecated.rb b/ext/psych/lib/psych/deprecated.rb
index 093f145302..fdff46845d 100644
--- a/ext/psych/lib/psych/deprecated.rb
+++ b/ext/psych/lib/psych/deprecated.rb
@@ -30,6 +30,12 @@ module Psych
     list.each(&block)
   end
 
+  def self.detect_implicit thing
+    warn "#{caller[0]}: detect_implicit is deprecated" if $VERBOSE
+    return '' unless String === thing
+    return 'null' if '' == thing
+    ScalarScanner.new.tokenize(thing).class.name.downcase
+  end
 end
 
 class Object