import { is_func } from './builtins.jsy'

export const _pi_cmp = (a, b) => (0 | a && a.order) - (0 | b && b.order)
export function _pi_apply(key_list, pluginList, ...args) ::
  for let key of key_list ::
    key = key || null

    for let plugin of pluginList || [] ::
      if ! plugin :: continue
      if null !== key ::
        plugin = plugin[key]
      if is_func @ plugin ::
        plugin(...args)