Class: Medicine::Dependency

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, options = {}) ⇒ Dependency

Returns a new instance of Dependency.



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# File 'lib/medicine/dependency.rb', line 8

def initialize(name, options = {})
  @name    = name
  @default = options.fetch(:default, NoDefault)
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/medicine/dependency.rb', line 6

def name
  @name
end

Instance Method Details

#default ⇒ Object

returns the default, yields block or raises an error

FIXME: move block yielding to default_or method.



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# File 'lib/medicine/dependency.rb', line 20

def default
  if default?
    typecast(@default)
  else
    if block_given?
      yield
    else
      raise NoDefaultError, "No default declared for #{name}"
    end
  end
end

#default? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/medicine/dependency.rb', line 32

def default?
  !required?
end

#method_name ⇒ Object 



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# File 'lib/medicine/dependency.rb', line 13

def method_name
  name
end

#required? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/medicine/dependency.rb', line 36

def required?
  @default == NoDefault
end