Class: Delayer::Procedure

Inherits:
Object
  • Object
show all
Defined in:
lib/delayer/procedure.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(delayer, &proc) ⇒ Procedure

Returns a new instance of Procedure.



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# File 'lib/delayer/procedure.rb', line 7

def initialize(delayer, &proc)
  @delayer = delayer
  @proc = proc
  @state = :stop
  @next = nil
  @delayer.class.register(self)
end

Instance Attribute Details

#delayer ⇒ Object (readonly)

Returns the value of attribute delayer.



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# File 'lib/delayer/procedure.rb', line 5

def delayer
  @delayer
end

#next ⇒ Object

Returns the value of attribute next.



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# File 'lib/delayer/procedure.rb', line 6

def next
  @next
end

#state ⇒ Object (readonly)

Returns the value of attribute state.



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# File 'lib/delayer/procedure.rb', line 5

def state
  @state
end

Instance Method Details

#break(node) ⇒ Object

insert node between self and self.next

Args

node

insertion

Return

node



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# File 'lib/delayer/procedure.rb', line 57

def break(node)
  tail = @next
  @next = node
  node.next = tail
  node
end

#cancel ⇒ Object

Cancel this job

Exception

Delayer::TooLate

if already called run()

Return

self



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# File 'lib/delayer/procedure.rb', line 36

def cancel
  unless @state == :stop
    raise Delayer::StateError(@state), 'cannot cancel Delayer::Procedure'
  end

  @state = :cancel
  self
end

#canceled? ⇒ Boolean

Return true if canceled this task

Return

true if canceled this task

Returns:

  • (Boolean) 


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# File 'lib/delayer/procedure.rb', line 48

def canceled?
  @state == :cancel
end

#run ⇒ Object

Run a process

Exception

Delayer::TooLate

if already called run()

Return

node



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# File 'lib/delayer/procedure.rb', line 20

def run
  unless @state == :stop
    raise Delayer::StateError(@state), 'call twice Delayer::Procedure'
  end

  @state = :run
  @proc.call
  @state = :done
  @proc = nil
end