Contents

module Elevate
  class Promise
    OUTSTANDING = 0
    FULFILLED = 1

    def initialize
      @lock = NSConditionLock.alloc.initWithCondition(OUTSTANDING)
      @result = nil
    end

    def fulfill(result)
      if @lock.tryLockWhenCondition(OUTSTANDING)
        @result = result
        @lock.unlockWithCondition(FULFILLED)
      end
    end

    def value
      result = nil

      @lock.lockWhenCondition(FULFILLED)
      result = @result
      @lock.unlockWithCondition(FULFILLED)

      result
    end
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
elevate-0.6.0	lib/elevate/promise.rb
elevate-0.5.0	lib/elevate/promise.rb
elevate-0.4.0	lib/elevate/promise.rb
elevate-0.3.3	lib/elevate/promise.rb
elevate-0.3.2	lib/elevate/promise.rb