get sinatra routes.

sinatra_routes.rb

require 'parser/current'

class SinatraRoutes
  attr_reader :filepath

  def initialize(filepath)
    @filepath = filepath
  end

  def routes
    @_routes = []
    traverse(Parser::CurrentRuby.parse(File.read(filepath)))

    @_routes.sort_by do |method, path|
      [path, method]
    end.each do |method, path|
      puts "#{method}\t#{path}"
    end
  end

  private

  def traverse(parent)
    return if parent.nil?

    loc = parent.loc

    if loc.instance_of?(Parser::Source::Map::Send)
      if loc.selector.source =~ /^(get|post|put|head|delete|patch)$/
        @_routes << [loc.node.children[1].upcase, loc.node.children[2].children[0]]
      end
    end

    parent.children.select { |n| n.instance_of?(Parser::AST::Node) }.each do |child|
      traverse(child)
    end
  end
end

SinatraRoutes.new('app.rb').routes

require parser gem