| 1 | ModuleNotFound = require './ModuleNotFound'
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| 2 | getArguments = require './get-arguments'
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| 3 |
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| 4 | construct = (c, args) ->
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| 5 | class F
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| 6 | constructor: -> c.apply @, args
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| 7 | F.prototype = c.prototype
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| 8 | return new F()
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| 9 |
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| 10 | runFactory = (factory, args) ->
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| 11 | factory.apply null, args
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| 12 |
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| 13 | throwNotFound = (name, parent) ->
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| 14 | throw new ModuleNotFound name, parent
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| 15 |
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| 16 | module.exports = class Container
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| 17 | constructor: (conf = {}, @_parents = []) ->
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| 18 | @_modules = conf.modules || {}
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| 19 | @_registrations = {}
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| 20 | @_instances = {}
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| 21 |
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| 22 | factory: (name, func) ->
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| 23 | throw new Error 'A factory must be a function' unless func instanceof Function
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| 24 | @_register 'factory', name, func
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| 25 |
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| 26 | value: (name, value) -> @_register 'value', name, value
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| 27 |
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| 28 | class: (name, constructor) ->
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| 29 | throw new TypeError 'A constructor must be a function' unless constructor instanceof Function
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| 30 | @_register 'class', name, constructor
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| 31 |
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| 32 | get: (name) ->
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| 33 | throwNotFound name unless @isRegistered name
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| 34 | registeredAt = @_registeredAt(name)
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| 35 | if registeredAt == 'local'
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| 36 | @_instantiate name unless @_isInstantiated(name)
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| 37 | return @_instances[name]
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| 38 | else
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| 39 | return @_parents[registeredAt].get(name)
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| 40 |
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| 41 | _isInstantiated: (name) -> Object.keys(@_instances).indexOf(name) != -1
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| 42 |
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| 43 | _registeredAt: (name) ->
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| 44 | if @_registrations[name]?
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| 45 | return 'local'
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| 46 | else
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| 47 | for p, i in @_parents
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| 48 | if p._registeredAt(name)?
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| 49 | parentIndex = i
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| 50 | return parentIndex
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| 51 |
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| 52 | isRegistered: (name) -> @_registeredAt(name) != undefined
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| 53 |
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| 54 | getRegistrations: ->
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| 55 | if @_parents.length == 0
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| 56 | return @_registrations
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| 57 |
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| 58 | all = (p.getRegistrations() for p in @_parents)
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| 59 | all.push @_registrations
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| 60 | all.reduce (acc, item) ->
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| 61 | Object.keys(item).forEach (key) -> acc[key] = item[key]
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| 62 | return acc
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| 63 | , {}
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| 64 |
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| 65 | getArguments: (name) ->
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| 66 | if @_modules[name]?
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| 67 | @_modules[name]
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| 68 | else
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| 69 | getArguments @_registrations[name].value
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| 70 |
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| 71 | loadAll: ->
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| 72 | p.loadAll() for p in @_parents
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| 73 | Object.keys(@_registrations).forEach (name) =>
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| 74 | @_instantiate name unless @_isInstantiated(name)
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| 75 |
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| 76 | shutdown: ->
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| 77 | Object.keys(@_instances).forEach (key) =>
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| 78 | @_instances[key]?.__amendShutdown?()
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| 79 | p.shutdown() for p in @_parents
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| 80 |
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| 81 | _register: (type, name, value) -> @_registrations[name] = value: value, type: type
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| 82 |
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| 83 | _instantiate: (name, parent) ->
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| 84 | module = @_registrations[name]
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| 85 | throwNotFound name, parent unless module?
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| 86 | type = module.type
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| 87 | value = module.value
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| 88 | instance = if type == 'value' then value else @_instantiateWithDependencies name, value, type
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| 89 | @_instances[name] = instance
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| 90 | return instance
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| 91 |
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| 92 | _instantiateWithDependencies: (name, value, type) ->
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| 93 | args = @getArguments name
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| 94 |
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| 95 | dependencies = args.map (depName) =>
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| 96 | registeredAt = @_registeredAt(depName)
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| 97 | if registeredAt == 'local'
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| 98 | if @_isInstantiated(depName) then @_instances[depName] else @_instantiate depName, name
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| 99 | else if registeredAt?
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| 100 | @_parents[registeredAt].get(depName)
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| 101 | else
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| 102 | throwNotFound depName, name
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| 103 |
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| 104 | return runFactory value, dependencies if type == 'factory'
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| 105 | return construct value, dependencies if type == 'class'
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