Class: LadderDrive::Emulator::PluginTriggerState

Inherits:
Object
  • Object
show all
Defined in:
lib/plc/emulator/plugin_trigger_state.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(plc, config) ⇒ PluginTriggerState

Returns a new instance of PluginTriggerState.



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# File 'lib/plc/emulator/plugin_trigger_state.rb', line 42

def initialize plc, config
  @plc = plc
  @config = config
  @value_type = config[:value_type]
  @devices = {}
  @next_trigger_times = {}
end

Instance Attribute Details

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/plc/emulator/plugin_trigger_state.rb', line 37

def config
  @config
end

#device ⇒ Object (readonly)

Returns the value of attribute device.



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# File 'lib/plc/emulator/plugin_trigger_state.rb', line 38

def device
  @device
end

#plc ⇒ Object (readonly)

Returns the value of attribute plc.



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# File 'lib/plc/emulator/plugin_trigger_state.rb', line 36

def plc
  @plc
end

#value ⇒ Object

Returns the value of attribute value.



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# File 'lib/plc/emulator/plugin_trigger_state.rb', line 40

def value
  @value
end

#value_type ⇒ Object (readonly)

Returns the value of attribute value_type.



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# File 'lib/plc/emulator/plugin_trigger_state.rb', line 39

def value_type
  @value_type
end

Instance Method Details

#changed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/plc/emulator/plugin_trigger_state.rb', line 67

def changed?
  !!@changed
end

#device_with_trigger(trigger) ⇒ Object 



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# File 'lib/plc/emulator/plugin_trigger_state.rb', line 145

def device_with_trigger trigger
  @devices[trigger.object_id] ||= @plc.device_by_name(trigger[:device])
end

#fallen? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/plc/emulator/plugin_trigger_state.rb', line 75

def fallen?
  !!@fallen
end

#key ⇒ Object 



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# File 'lib/plc/emulator/plugin_trigger_state.rb', line 50

def key
  object_id
end

#raised? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/plc/emulator/plugin_trigger_state.rb', line 71

def raised?
  !!@raised
end

#reset ⇒ Object 



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# File 'lib/plc/emulator/plugin_trigger_state.rb', line 138

def reset
  @changed = nil
  @raised = nil
  @fallen = nil
  @triggered = nil
end

#triggered? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/plc/emulator/plugin_trigger_state.rb', line 79

def triggered?
  !!@triggered
end

#update ⇒ Object 



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# File 'lib/plc/emulator/plugin_trigger_state.rb', line 87

def update
  return unless @triggered.nil?

  triggers = config[:triggers]
  triggers ||= [config[:trigger]]

  @triggered = false

  triggers.each do |trigger|
    case trigger[:type]
    when "changed", "raise", "fall", "raise_and_fall"
      device = device_with_trigger(trigger)
      value = device.send(@value_type || :value)

      # update flags
      @changed = @value != value
      case value
      when true, false, nil
        @raised = @changed && !!value
        @fallen = @changed && !value
      else
        @fallen = @changed && value == 0
        @raised = @changed && !@fallen
      end
      @value = value

      # judgement triggered
      case trigger[:type]
      when "raise"
        @triggered = true if @raised
      when "fall"
        @triggered = true if @fallen
      else
        @triggered = true if @changed
      end

    when "interval"
      now = Time.now
      t = @next_trigger_times[trigger.object_id] || now
      while now >= t
        @triggered ||= true
        t += trigger[:interval]
      end
      @next_trigger_times[trigger.object_id] = t
    else
      @triggered = false
    end
  end
  @triggered
end