add rails/upgrade_7_2_to_8_0 snippet

Author: flyerhzm

lib/rails/convert_configs_7_2_to_8_0.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+Synvert::Rewriter.new 'rails', 'convert_configs_7_2_to_8_0' do
+  configure(parser: Synvert::PRISM_PARSER)
+
+  description <<~EOS
+    It converts rails configs from 7.1 to 8.0
+
+    1. it sets `config.load_defaults 8.0` in config/application.rb.
+  EOS
+
+  if_gem 'rails', '~> 8.0.0'
+
+  call_helper 'rails/set_load_defaults', rails_version: '8.0'
+end

lib/rails/upgrade_7_2_to_8_0.rb

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+Synvert::Rewriter.new 'rails', 'upgrade_7_2_to_8_0' do
+  description 'It upgrades rails 7.2 to 8.0.'
+
+  add_snippet 'rails', 'convert_configs_7_2_to_8_0'
+  add_snippet 'rails', 'new_enum_syntax'
+end