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82 lines
No EOL
2.8 KiB
CoffeeScript
82 lines
No EOL
2.8 KiB
CoffeeScript
#CocoClass = require 'lib/CocoClass'
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#
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#module.exports = class AsyncCloner extends CocoClass
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# constructor: (@source, @depth=2) ->
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# # passing in a depth of 0 will just _.clone the first layer, and will result in 1 indexList
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# super()
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# @indexLists = []
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# @initClone()
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#
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# initClone: () ->
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# @target = AsyncCloner.cloneToDepth(@source, @depth)
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# @indexLists = [_.keys(@target)] if _.isObject @target
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#
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# @cloneToDepth: (value, depth) ->
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# value = _.clone(value)
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# return value unless depth and _.isObject value
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# value[key] = @cloneToDepth(value[key], depth-1) for key in _.keys value
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# value
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#
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# clone: ->
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# while @indexLists.length
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# #console.log 'Clone loop:', JSON.stringify @indexLists
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# @moveIndexForward() # fills or empties the index so @indexLists.length === @depth + 1
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# break if @done()
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# @cloneOne()
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# @moveIndexForwardOne()
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# break if @done() or @timeToSleep()
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#
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# moveIndexForward: ->
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# while @indexLists.length
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# nextValue = @getNextValue()
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# if _.isObject(nextValue)
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# if @indexLists.length <= @depth
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# # push a new list if it's a collection
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# @indexLists.push _.keys(nextValue)
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# continue
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# else
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# break # we done, the next value needs to be deep cloned
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# #console.log 'Skipping:', @getNextPath()
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# @moveIndexForwardOne() # move past this value otherwise
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# #console.log '\tMoved index forward', JSON.stringify @indexLists
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#
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# getNextValue: ->
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# value = @target
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# value = value[indexList[0]] for indexList in @indexLists
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# value
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#
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# getNextParent: ->
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# parent = @target
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# parent = parent[indexList[0]] for indexList in @indexLists[...-1]
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# parent
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#
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# getNextPath: ->
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# (indexList[0] for indexList in @indexLists when indexList.length).join '.'
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#
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# moveIndexForwardOne: ->
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# @indexLists[@indexLists.length-1].shift() # move the index forward one
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# # if we reached the end of an index list, trim down through all finished lists
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# while @indexLists.length and not @indexLists[@indexLists.length-1].length
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# @indexLists.pop()
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# @indexLists[@indexLists.length-1].shift() if @indexLists.length
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#
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# cloneOne: ->
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# if @indexLists.length isnt @depth + 1
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# throw new Error('Cloner is in an invalid state!')
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# parent = @getNextParent()
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# key = @indexLists[@indexLists.length-1][0]
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# parent[key] = _.cloneDeep parent[key]
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# #console.log 'Deep Cloned:', @getNextPath()
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#
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# done: -> not @indexLists.length
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#
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# timeToSleep: -> false
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###
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Overall, the loop is:
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Fill indexes if we need to to the depth we've cloned
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Clone that one, popping it off the list.
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If the last list is now empty, pop that list and every subsequent list if needed.
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Check for doneness, or timeout.
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### |