Class: MethodArgs::ArgList::Arg

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, type, default = nil) ⇒ Arg

Returns a new instance of Arg.



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# File 'lib/method_args.rb', line 26

def initialize(name, type, default = nil)
  @name, @type, @default = name, type, default
end

Instance Attribute Details

#arg_list ⇒ Object

Returns the value of attribute arg_list.



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# File 'lib/method_args.rb', line 23

def arg_list
  @arg_list
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/method_args.rb', line 24

def name
  @name
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/method_args.rb', line 24

def type
  @type
end

Instance Method Details

#default_value(receiver = nil) ⇒ Object 



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# File 'lib/method_args.rb', line 42

def default_value(receiver = nil)
  return nil if @default.nil?
  receiver ||= arg_list.owning_method.receiver if arg_list.owning_method.respond_to?(:receiver)
  raise "You must specify a receiver for the defaul value" if receiver.nil?
  raise "You must evaluate defaults in the context of a matching class. #{receiver.class.name} is not a #{@cls.name}." unless receiver.is_a?(arg_list.cls)
  receiver.instance_eval(@default)
end

#optional? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/method_args.rb', line 34

def optional?
  @type == :optional
end

#required? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/method_args.rb', line 30

def required?
  @type == :required
end

#splat? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/method_args.rb', line 38

def splat?
  @type == :splat
end