* ext/psych/lib/psych/deprecated.rb: adding deprecated "read_type_class"

  method
* test/psych/test_deprecated.rb: ditto

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27518 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 22 insertions, 0 deletions

diff --git a/ext/psych/lib/psych/deprecated.rb b/ext/psych/lib/psych/deprecated.rb
index 1d401d920f..dd4ca6b68f 100644
--- a/ext/psych/lib/psych/deprecated.rb
+++ b/ext/psych/lib/psych/deprecated.rb
@@ -56,6 +56,16 @@ module Psych
     return thing unless String === thing
     "tag:yaml.org,2002:#{thing}"
   end
+
+  def self.read_type_class type, reference
+    warn "#{caller[0]}: read_type_class is deprecated" if $VERBOSE
+    _, _, type, name = type.split ':', 4
+
+    reference = name.split('::').inject(reference) do |k,n|
+      k.const_get(n.to_sym)
+    end if name
+    [type, reference]
+  end
 end
 
 class Object
diff --git a/test/psych/test_deprecated.rb b/test/psych/test_deprecated.rb
index 6db7238b0c..2312600ac8 100644
--- a/test/psych/test_deprecated.rb
+++ b/test/psych/test_deprecated.rb
@@ -187,5 +187,17 @@ module Psych
       assert_equal Psych, Psych.tagurize(Psych)
       assert_equal 'tag:yaml.org,2002:foo', Psych.tagurize('foo')
     end
+
+    def test_read_type_class
+      things = Psych.read_type_class 'tag:yaml.org,2002:int:Psych::TestDeprecated::QuickEmitter', Object
+      assert_equal 'int', things.first
+      assert_equal Psych::TestDeprecated::QuickEmitter, things.last
+    end
+
+    def test_read_type_class_no_class
+      things = Psych.read_type_class 'tag:yaml.org,2002:int', Object
+      assert_equal 'int', things.first
+      assert_equal Object, things.last
+    end
   end
 end