Class: EventMachine::Q::ResolvedPromise

Inherits:
Promise
  • Object
show all
Defined in:
lib/em-promise/q.rb

Instance Method Summary collapse

Constructor Details

#initialize(response, error = false) ⇒ ResolvedPromise

Returns a new instance of ResolvedPromise.

Raises:



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# File 'lib/em-promise/q.rb', line 95

def initialize(response, error = false)
  raise ArgumentError if error && response.is_a?(Promise)
  super()
  
  @error = error
  @response = response
end

Instance Method Details

#then(callback = nil, errback = nil, &blk) ⇒ Object 



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# File 'lib/em-promise/q.rb', line 103

def then(callback = nil, errback = nil, &blk)
  result = Q.defer
  
  callback ||= blk
  
  EM.next_tick {
    if @error
      result.resolve(errback.nil? ? Q.reject(@response) : errback.call(@response))
    else
      result.resolve(callback.nil? ? @response : callback.call(@response))
    end
  }
  
  result.promise
end