Add custom cop to refactor revision to rebuild in bottle block

Library/.rubocop.yml

@@ -6,6 +6,12 @@ AllCops:
     - '**/Casks/**/*'
     - '**/vendor/**/*'
 
+require:
+  - ./Homebrew/rubocops/bottle_block_cop.rb
+
+CustomCops/CorrectBottleBlock:
+  Enabled: true
+
 Metrics/AbcSize:
   Enabled: false
 

Library/Homebrew/rubocops/bottle_block_cop.rb

@@ -0,0 +1,54 @@
+module RuboCop
+  module Cop
+   module CustomCops 
+      class CorrectBottleBlock < Cop
+        MSG = 'Use rebuild instead of revision in bottle block'.freeze
+
+        def on_block(node)
+          return if block_length(node).zero?
+          method, _args, _body = *node
+
+          keyword, method_name = *method
+
+          if method_name.equal?(:bottle) and has_revision?(_body)
+            add_offense(node, :expression)
+          end
+        end
+
+        private
+
+        def autocorrect(node)
+          ->(corrector) do
+            # Check for revision
+            method, _args, _body = *node
+            if has_revision?(_body)
+              replace_revision(corrector, node)
+            end
+          end
+        end
+
+        def has_revision?(body)
+          body.children.each do |method_call_node|
+            _receiver, _method_name, *args = *method_call_node
+            if _method_name == :revision
+              return true
+            end
+          end
+          false
+        end
+
+        def replace_revision(corrector, node)
+          new_source = String.new
+          node.source.each_line do |line|
+            if line =~ /\A\s*revision/
+              line = line.sub('revision','rebuild')
+            end
+            new_source << line
+          end
+          corrector.insert_before(node.source_range, new_source)
+          corrector.remove(node.source_range)
+        end
+      end
+    end
+  end
+end