Class: Excom::Plugins::Executable::State

Inherits:
Object
  • Object
show all
Defined in:
lib/excom/plugins/executable.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(values = {}) ⇒ State

Returns a new instance of State.



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# File 'lib/excom/plugins/executable.rb', line 23

def initialize(values = {})
  @values = values
end

Class Method Details

.add_prop(*props) ⇒ Object 



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# File 'lib/excom/plugins/executable.rb', line 12

def self.add_prop(*props)
  prop_names.push(*props)
  props.each{ |prop| def_prop_accessor(prop) }
end

.def_prop_accessor(name) ⇒ Object 



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# File 'lib/excom/plugins/executable.rb', line 17

def self.def_prop_accessor(name)
  define_method(name) { @values[name] }
  define_method("#{name}=") { |value| @values[name] = value }
  define_method("has_#{name}?") { @values.key?(name) }
end

.prop_names ⇒ Object 



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# File 'lib/excom/plugins/executable.rb', line 8

def self.prop_names
  @prop_names ||= []
end

Instance Method Details

#clear! ⇒ Object 



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# File 'lib/excom/plugins/executable.rb', line 27

def clear!
  @values.clear
end

#prop_names ⇒ Object 



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# File 'lib/excom/plugins/executable.rb', line 31

def prop_names
  self.class.prop_names
end

#replace(other) ⇒ Object 



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# File 'lib/excom/plugins/executable.rb', line 35

def replace(other)
  missing_props = prop_names - other.prop_names

  unless missing_props.empty?
    raise ArgumentError, "cannot accept execution state #{other} due to missing props: #{missing_props}"
  end

  prop_names.each do |prop|
    @values[prop] = other.public_send(prop)
  end
end