Class: ActionDispatch::Journey::Router

# File 'actionpack/lib/action_dispatch/journey/router.rb', line 22

def eager_load!
  # Eagerly trigger the simulator's initialization so it doesn't happen during a
  # request cycle.
  simulator
  nil
end

# File 'actionpack/lib/action_dispatch/journey/router.rb', line 110

def filter_routes(path)
  simulator.memos(path) { [] }
end

# File 'actionpack/lib/action_dispatch/journey/router.rb', line 114

def match_head_routes(routes, req)
  head_routes = routes.select { |r| r.requires_matching_verb? && r.matches?(req) }
  return head_routes unless head_routes.empty?

  begin
    req.request_method = "GET"
    routes.select! { |r| r.matches?(req) }
    routes
  ensure
    req.request_method = "HEAD"
  end
end

# File 'actionpack/lib/action_dispatch/journey/router.rb', line 42

def recognize(req, &block)
  req_params  = req.path_parameters
  path_info   = req.path_info
  script_name = req.script_name

  routes = filter_routes(path_info)

  custom_routes.each { |r|
    routes << r if r.path.match?(path_info)
  }

  if req.head?
    routes = match_head_routes(routes, req)
  else
    routes.select! { |r| r.matches?(req) }
  end

  if routes.size > 1
    routes.sort! do |a, b|
      a.precedence <=> b.precedence
    end
  end

  routes.each do |r|
    match_data = r.path.match(path_info)

    path_parameters = req_params.merge r.defaults

    index = 1
    match_data.names.each do |name|
      if val = match_data[index]
        val = if val.include?("%")
          CGI.unescapeURIComponent(val)
        else
          val
        end
        val.force_encoding(::Encoding::UTF_8)
        path_parameters[name.to_sym] = val
      end
      index += 1
    end

    if r.path.anchored
      yield(r, path_parameters)
    else
      req.script_name = (script_name.to_s + match_data.to_s).chomp("/")
      req.path_info = match_data.post_match
      req.path_info = "/" + req.path_info unless req.path_info.start_with? "/"

      yield(r, path_parameters)

      req.script_name     = script_name
      req.path_info       = path_info
    end

    req.path_parameters = req_params
  end
end

# File 'actionpack/lib/action_dispatch/journey/router.rb', line 29

def serve(req)
  recognize(req) do |route, parameters|
    req.path_parameters = parameters
    req.route = route

    _, headers, _ = response = route.app.serve(req)

    return response unless headers[Constants::X_CASCADE] == "pass"
  end

  [404, { Constants::X_CASCADE => "pass" }, ["Not Found"]]
end

# File 'actionpack/lib/action_dispatch/journey/router.rb', line 102

def simulator
  routes.simulator
end