Module: JustBackgammon::Common

Included in:
Bar, DiceSet, Die, OffBoard, Piece, Point, PointSet
Defined in:
lib/just_backgammon/common.rb

Overview

Common

Mixin that allows the class to have a custom load method It allows initializing by arrays, hashes or objects with the same class.

Instance Method Summary collapse

Instance Method Details

#load(argument) ⇒ Array<Object>, Object

Method that initializing an object by arrays, hashes or objects with the same class. Returns the object or array of objects. Will raise error if elements of array are not all the same Class. Will raise error if argument is not Hash, Array or the same Class.

Parameters:

  • argument (Array<Hash>, Hash, Object) —

    The initialization data.

Returns:

  • (Array<Object>, Object) 


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# File 'lib/just_backgammon/common.rb', line 18

def load(argument)
  case argument
  when Hash
    self.new(argument)
  when Array
    case
    when argument.all? { |o| o.instance_of?(Hash) }
      argument.map { |o| self.new(o) }
    when argument.all? { |o| o.instance_of?(self) }
      argument
    else
      raise ArgumentError, "elements of array must have the same class"
    end
  when self
    argument
  else
    raise ArgumentError, "argument needs to be a Hash, Array or #{self}"
  end
end