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  • whowhen.coffee

  • ¶ 
    date_to_now = require("./nanoclock").date_to_now
one_million = require("./nanoclock").one_million
rebase = require("./rebase")
int_to_base = rebase.int_to_base
base_to_int = rebase.base_to_int

class WhoWhen
  constructor: (@user_symbol, @session_no, date) ->
    if date?
      @setTime(date)
  parse: (@who_when_str) ->
    part = @who_when_str.split("_")
    @user_no = base_to_int(part[0])
    @user_symbol = part[0]
    @session_no = base_to_int(part[1])
    @sec = base_to_int(part[2])
    @nsec = base_to_int(part[3])
    this
  build: (@user_symbol, @session_no, @sec, @nsec) ->
    this
  build_from_user_sess_time: (user_symbol, session_no, date) ->
  • ¶

    TODO improve time accuracy of nsec https://www.npmjs.com/package/performance-now add performance-now to package.json https://developer.mozilla.org/en-US/docs/Web/API/Performance.now console.warn(“use of WhoWhen.buidl_from_user_sess_time() is hazardous, use NooDB.clock”)

        now = date_to_now(date)
    @build(user_symbol, session_no, now.sec, now.nsec)
  setTime: (date) ->
  • ¶

    console.warn(“use of WhoWhen.setTime() is hazardous, use NooDB.clock”)

        now = date_to_now(date)
    @sec = now.sec
    @nsec = now.nsec
    this
  getDate: ->
    msec = (@sec * 1000) + ((@nsec / one_million) | 0)
    new Date(msec)
  getISO: ->
    @getDate().toISOString()
  toString: ->
    return "user: #{@user_symbol}, sess: #{int_to_base(@sess_no)}, sec: #{@sec}, nsec: #{@nsec}"
  repr: ->
    return [@user_symbol
            int_to_base(@session_no)
            int_to_base(@sec)
            int_to_base(@nsec)].join("_")
  toSafeCURIE: ->
    return "[nrn:#{@repr()}]"
  now: ->
    return {sec: @sec, nsec: @nsec}
  whn: ->
    @now()
  sess: ->
    return {user_symbol: @user_symbol, session_no: @session_no}
  cmp: (other) ->
    if @sec > other.sec
      return 1
    if @sec is other.sec
      if @nsec > other.nsec
        return 1
      if @nsec is other.sec
        return 0
    return -1

(exports ? this).WhoWhen = WhoWhen