Generalize generation of body mutations for sends

lib/mutant/mutator/node.rb

@@ -125,11 +125,13 @@ module Mutant
       #
       # @api private
       #
-      def emit_body_mutations
-        Mutator.each(node.body) do |mutation|
-          node = dup_node
-          node.body = mutation
-          emit(node)
+      def emit_body_mutations(method = :body)
+        body = node.public_send(method)
+
+        Mutator.each(body) do |mutation|
+          dup = dup_node
+          dup.public_send(:"#{method}=", mutation)
+          emit(dup)
         end
       end
 

lib/mutant/mutator/node/send.rb

@@ -102,22 +102,9 @@ module Mutant
           #
           def dispatch
             super
-            emit_argument_mutations
+            emit_body_mutations(:arguments)
           end
 
-          # Emit argument mutations
-          #
-          # @return [undefined]
-          #
-          # @api private
-          #
-          def emit_argument_mutations
-            Mutator.each(node.arguments) do |mutation|
-              dup = dup_node
-              dup.arguments = mutation
-              emit(dup)
-            end
-          end
         end
       end
     end