Class: CalendariumRomanum::Enum Abstract

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/calendarium-romanum/enum.rb

Overview

This class is abstract.

Each subclass encapsulates a finite set of value objects.

Direct Known Subclasses

Colours, Data, Ranks, Seasons

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.all ⇒ Array (readonly)

Returns all contained value objects

Returns:

  • (Array) 


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# File 'lib/calendarium-romanum/enum.rb', line 34

def all
  @all
end

Class Method Details

.[](identifier) ⇒ Object

Returns value object or nil.

Parameters:

  • identifier

Returns:

  • value object or nil



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# File 'lib/calendarium-romanum/enum.rb', line 49

def_delegators :@indexed, :[]

.each { ... } ⇒ void

This method returns an undefined value.

Yields:

  • value object



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# File 'lib/calendarium-romanum/enum.rb', line 41

def_delegators :@all, :each

.values(index_by: nil) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Parameters:

  • index_by (defaults to: nil) —

    specifies which value objects’ property contains unique internal identifier for use with []



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# File 'lib/calendarium-romanum/enum.rb', line 15

def values(index_by: nil)
  defined?(@indexed) && raise(RuntimeError.new('initialized repeatedly'))

  @indexed = {}
  @all = yield.freeze

  @all.each_with_index do |val, i|
    val.freeze

    key = index_by ? val.public_send(index_by) : i
    @indexed[key] = val
  end

  @indexed.freeze
end