lib/yard/handlers/ruby/constant_handler.rb in yard-0.9.0 vs lib/yard/handlers/ruby/constant_handler.rb in yard-0.9.1

@@ -16,10 +16,15 @@
   private
 
   def process_constant(statement)
     name = statement[0][0][0]
     value = statement[1].source
-    register ConstantObject.new(namespace, name) {|o| o.source = statement; o.value = value.strip }
+    obj = P(namespace, name)
+    if obj.is_a?(NamespaceObject)
+      raise YARD::Parser::UndocumentableError, "constant for existing #{obj.type} #{obj}"
+    else
+      register ConstantObject.new(namespace, name) {|o| o.source = statement; o.value = value.strip }
+    end
   end
 
   def process_structclass(statement)
     lhs = statement[0][0]
     if lhs.type == :const