Returns the location of the 10 longest methods. 1.9 only

rip_longest.rb

require 'pathname'
require 'ripper'

module LongestMethod
  class Method < Struct.new(:location, :size)
    def self.add(line_number, token_count)
      (@methods ||= []).push new(line_number, token_count)
    end

    def to_s
      "size: #{size}\tlocation: #{location}"
    end

    def self.all
      @methods
    end
  end

  class Builder < Ripper::SexpBuilder
    attr_reader :file_name

    def initialize(file)
      super(file.read)
      @file_name = file.to_s
    end

    def on_def(defexp, argsexp, bodyexp) # parser event
      Method.add(locator(defexp.last.first), bodyexp.flatten.compact.size)
    end

    def locator(line_num)
      "#{file_name}:#{line_num}"
    end
  end

  if  ARGV.size == 1
    file = Pathname.new(ARGV[0])

    if file.directory?
      for entry in Pathname::glob("#{file}/**/*.rb")
        Builder.new(entry).parse
      end
    else
      Builder.new(file).parse
    end

    puts Method.all.sort_by(&:size)[-10..-1]
  else
    puts "please supply a file or directory"
  end

end