yield_handler.rb in yard-0.4.0

- old
+ new

@@ -5,11 +5,10 @@
     return unless owner.is_a?(MethodObject) # Only methods yield
     return if owner.has_tag? :yield         # Don't override yield tags
     return if owner.has_tag? :yieldparam    # Same thing.
 
     yieldtag = YARD::Tags::Tag.new(:yield, "", [])
-    owner.docstring.add_tag(yieldtag)
     tokval_list(statement.tokens[2..-1], Token).each do |item|
       item = item.inspect unless item.is_a?(String)
       if item == "self"
         yieldtag.types << '_self'
         owner.docstring.add_tag YARD::Tags::Tag.new(:yieldparam, 
@@ -20,7 +19,9 @@
           "the result of the method from the superclass", nil, '_super')
       else
         yieldtag.types << item
       end
     end
+
+    owner.docstring.add_tag(yieldtag) unless yieldtag.types.empty?
   end
 end
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