1 files changed, 26 insertions, 0 deletions
diff --git a/lib/gitlab/diff/position_tracer/base_strategy.rb b/lib/gitlab/diff/position_tracer/base_strategy.rb
new file mode 100644
index 00000000000..65049daabf4
--- /dev/null
+++ b/lib/gitlab/diff/position_tracer/base_strategy.rb
@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Diff
+    class PositionTracer
+      class BaseStrategy
+        attr_reader :tracer
+
+        delegate \
+          :project,
+          :ac_diffs,
+          :bd_diffs,
+          :cd_diffs,
+          to: :tracer
+
+        def initialize(tracer)
+          @tracer = tracer
+        end
+
+        def trace(position)
+          raise NotImplementedError
+        end
+      end
+    end
+  end
+end