find_by(email: 'xxx')みたいなのを探すやつ

find_by_ast.rb

# https://nacl-ltd.github.io/2021/07/02/ruby-ast.html

require 'bundler/inline'

gemfile do
  ruby '3.2.2' # 適宜変える
  source 'https://rubygems.org'
  gem 'parser'
  gem 'debug'
end
require 'parser/current'
require 'debug'

class Processor
  include AST::Processor::Mixin

  def initialize(path)
    @path = path
    @result = []
  end

  attr_reader :result, :path

  def on_send(node)
    rsv = node.to_a[0]
    m = node.to_a[1]
    #if m == :email
    #  binding.b
    #end
    if m == :find_by && rsv&.type == :send
      if check_hash(node.to_a[2], node.location.line)
        puts "#{path}: #{node.location.line}"
      end
    end

    node
  end

  def check_hash(node, line)
    return if node.type != :hash
    # s(:hash,
    #  s(:pair,
    #   s(:sym, :email),
    #   s(:lvar, :foo)))

    # binding.b
    node.to_a.tap {
      # 複数pairがあるとき ... find_by(email:, fuga:)  
      if _1.size != 1
        puts "あやしいなあ #{path}: #{line}"
        # raise(_1.inspect)
      end
    }[0].to_a[0].to_a[0] == :email
  end

  def handler_missing(node)
    node.children.each do |child|
      process(child) if child.is_a?(AST::Node)
    end
  end
end


if ENV['DEBUG'] == 'true'
str = "ffffff.find_by(email: user.email, name: user.display_name)"
expr = Parser::CurrentRuby.parse(str)
processor = Processor.new('')
processor.process(expr)
exit
end

Dir.glob("**/*.rb").each do |path|
  # puts path
  expr = Parser::CurrentRuby.parse(File.read(path))
  processor = Processor.new(path)
  processor.process(expr)
end

emailでユニークなのを前提にしているものを探している