Class: Erlectricity::Port

Inherits:
Object
  • Object
show all
Defined in:
lib/erlectricity/port.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(input = STDIN, output = STDOUT) ⇒ Port

Returns a new instance of Port.



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# File 'lib/erlectricity/port.rb', line 7

def initialize(input=STDIN, output=STDOUT)
  @input = input
  @output = output

  input.sync = true
  output.sync = true

  @encoder = Erlectricity::Encoder.new(nil)
  @skipped = []
  @queue = []
end

Instance Attribute Details

#input ⇒ Object (readonly)

Returns the value of attribute input.



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# File 'lib/erlectricity/port.rb', line 3

def input
  @input
end

#output ⇒ Object (readonly)

Returns the value of attribute output.



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# File 'lib/erlectricity/port.rb', line 3

def output
  @output
end

#queue ⇒ Object (readonly)

Returns the value of attribute queue.



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# File 'lib/erlectricity/port.rb', line 5

def queue
  @queue
end

#skipped ⇒ Object (readonly)

Returns the value of attribute skipped.



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# File 'lib/erlectricity/port.rb', line 4

def skipped
  @skipped
end

Instance Method Details

#receive ⇒ Object 



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# File 'lib/erlectricity/port.rb', line 19

def receive
  queue.empty? ? read_from_input : queue.shift
end

#restore_skipped ⇒ Object 



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# File 'lib/erlectricity/port.rb', line 31

def restore_skipped
  @queue = self.skipped + self.queue
end

#send(term) ⇒ Object 



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# File 'lib/erlectricity/port.rb', line 23

def send(term)
  @encoder.out = StringIO.new('', 'w')
  @encoder.write_any(term)
  data = @encoder.out.string
  output.write([data.length].pack("N"))
  output.write(data)
end