module Mutant
  class Mutator
    class Node
      class Literal < self
        # Mutator for regexp literals
        class Regex < self

          handle(Rubinius::AST::RegexLiteral)

        private

          # Emit mutants
          #
          # @return [undefined]
          #
          # @api private
          #
          def dispatch
            emit_nil
            emit_self('') # match all
            emit_self('a\A') # match nothing
            emit_new { new_self(Random.hex_string) }
          end

          # Return new Rubinius::AST::Regex
          #
          # @param [String] source
          #
          # @param [Integer] options
          #   options of regexp, defaults to mutation subject node options
          #
          # @return [undefined]
          #
          # @api private
          #
          def new_self(source,options=nil)
            super(source,options || node.options)
          end
        end
      end
    end
  end
end