mirror of https://github.com/fazo96/pbs.git
51 lines
1.6 KiB
CoffeeScript
Executable File
51 lines
1.6 KiB
CoffeeScript
Executable File
#!/usr/bin/env coffee
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chalk = require 'chalk'
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verbose = no
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log = (x...) -> if verbose then console.log chalk.bold("Log:"), x...
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err = (x...) -> console.log chalk.bold (chalk.red "Error:"), x...
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# Returns the highest number in an array of numbers
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maxa = (l) -> return Math.max.apply null, l
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# Find the activity with given id
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toActivity = (id,list) ->
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if !list? then err "list is",list
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item = {}
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list.forEach (x) -> if x.id is id then item = x
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return item
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# Find the item
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calculateEndDay = (item,list) ->
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if !item.startDay?
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log "calculating start day of",item.id
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item.startDay = calculateStartDay item, list
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log "start day of",item.id,"is",item.startDay
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item.endDay = item.startDay + item.duration
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log "end day of",item.id,"is",item.endDay
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return item.endDay
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# Find out which day the activity starts
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calculateStartDay = (item,list) ->
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if item.depends.length is 0 then return item.startDay = 0
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max = maxa item.depends.map((x) -> toActivity x,list).map((x) -> calculateEndDay x, list)
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log "start day of",item.id,"is",max
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# write max delay time to each depend
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item.depends.forEach (x) ->
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log "writing permittedDelay to dependency", x, "of", item
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i = toActivity x, list
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i.permittedDelay = max - calculateEndDay i, list
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log "permitted delay of",x,"is",i.permittedDelay
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return item.startDay = max
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# Find out which activity has the highest id
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highestID = (list) -> return maxa(list.map (x) -> x.id)
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calculate = (list) ->
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calculateEndDay (toActivity highestID(list), list), list
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return list
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ex = [{id: 0, depends: [], duration: 2}, { id: 1, depends: [0], duration: 3},{id: 2, depends: [0,1], duration: 4}]
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console.log calculate ex
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