Module: Eapi::Methods::Accessor

Included in:
Common::ClassMethods
Defined in:
lib/eapi/methods/accessor.rb

Instance Method Summary collapse

Instance Method Details

#define_accessors(field) ⇒ Object 



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# File 'lib/eapi/methods/accessor.rb', line 56

def define_accessors(field)
  fluent_accessor field
end

#define_init(field, init_class) ⇒ Object 



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# File 'lib/eapi/methods/accessor.rb', line 44

def define_init(field, init_class)
  init         = Eapi::Methods::Names.init field
  instance_var = Eapi::Methods::Names.instance_var field

  define_method init do
    klass = Eapi::TypeChecker.constant_for_type init_class
    raise Eapi::Errors::InvalidInitClass, "init_class: #{init_class}" if klass.nil?
    value = klass.new
    instance_variable_set instance_var, value
  end
end

#define_multiple_accessor(field) ⇒ Object 



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# File 'lib/eapi/methods/accessor.rb', line 5

def define_multiple_accessor(field)
  init          = Eapi::Methods::Names.init field
  fluent_adder  = Eapi::Methods::Names.add field
  fluent_setter = Eapi::Methods::Names.fluent_setter field
  getter        = Eapi::Methods::Names.getter field

  define_method fluent_adder do |value|
    current = send(getter) || send(init)
    if current.respond_to? :add
      current.add value
    else
      current << value
    end

    send(fluent_setter, current)
  end
end

#define_multiple_clearer(field) ⇒ Object 



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# File 'lib/eapi/methods/accessor.rb', line 23

def define_multiple_clearer(field)
  init           = Eapi::Methods::Names.init field
  fluent_clearer = Eapi::Methods::Names.clearer field
  getter         = Eapi::Methods::Names.getter field

  define_method fluent_clearer do
    current = send(getter)
    if current.nil?
      # NOOP
    elsif current.respond_to?(:clear)
      current.clear
    elsif respond_to?(init)
      send(init)
    else
      raise Eapi::Errors::CannotClearFieldError, "#{self} can't clear #{field}: it does not respond to `clear` nor we have defined a `init_#{field}` method"
    end

    self
  end
end