# File: repetition.rb

require_relative 'monadic_expression' # Access the superclass

module Regex # This module is used as a namespace
  # Abstract class. An unary matching operator.
  # It succeeds when the specified repetition of the child expression 
  # succeeds to match the subject text in the same serial arrangement
  class Repetition < MonadicExpression
    attr_reader(:multiplicity)

    # Constructor.
    def initialize(childExpressionToRepeat, aMultiplicity)
      super(childExpressionToRepeat)
      @multiplicity = aMultiplicity
    end

    protected

    # Conversion method re-definition.
    # Purpose: Return the String representation of the concatented expressions.
    def text_repr()
      result = all_child_text + multiplicity.to_str
      return result
    end
  end # class
end # module

# End of file