Class: Reacto::Operations::Map

Inherits:
Object
  • Object
show all
Defined in:
lib/reacto/operations/map.rb

Instance Method Summary collapse

Constructor Details

#initialize(mapping, error: nil, close: nil) ⇒ Map

Returns a new instance of Map.



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# File 'lib/reacto/operations/map.rb', line 7

def initialize(mapping, error: nil, close: nil)
  @mapping = mapping
  @error = error
  @close = close
end

Instance Method Details

#call(tracker) ⇒ Object 



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# File 'lib/reacto/operations/map.rb', line 13

def call(tracker)
  error = if @error
            -> (e) { tracker.on_error(@error.call(e)) }
          else
            tracker.method(:on_error)
          end

  close = if @close
            -> () do
              tracker.on_value(@close.call)
              tracker.on_close
            end
          else
            tracker.method(:on_close)
          end

  Subscriptions::OperationSubscription.new(
    tracker,
    value: -> (v) { tracker.on_value(@mapping.call(v)) },
    error: error,
    close: close
  )
end