and_or.rb in rubocop-0.20.1

- old
+ new

@@ -3,10 +3,12 @@
 module Rubocop
   module Cop
     module Style
       # This cop checks for uses of *and* and *or*.
       class AndOr < Cop
+        include AutocorrectUnlessChangingAST
+
         MSG = 'Use `%s` instead of `%s`.'
 
         OPS = { 'and' => '&&', 'or' => '||' }
 
         def on_and(node)
@@ -26,23 +28,9 @@
           if op == op_type
             add_offense(node,
                         :operator,
                         format(MSG, OPS[op], op))
           end
-        end
-
-        def autocorrect(node)
-          c = correction(node)
-          new_source = rewrite_node(node, c)
-
-          # Make the correction only if it doesn't change the AST.
-          @corrections << c if node == SourceParser.parse(new_source).ast
-        end
-
-        def rewrite_node(node, correction)
-          processed_source = SourceParser.parse(node.loc.expression.source)
-          c = correction(processed_source.ast)
-          Corrector.new(processed_source.buffer, [c]).rewrite
         end
 
         def correction(node)
           lambda do |corrector|
             replacement = (node.type == :and ? '&&' : '||')