intprog_hackery/sorting_algos.rb

# TODO: Make variadic, such that we only need one method
def compare_to(sortings)
  first, second, third = *sortings

  def return_stat sorting
    if sorting.type == "String"
      {:ret => "this.#{sorting.variable}.compareTo(other.#{sorting.variable})"}
    else
      {:ret => sorting.comparator == ">" ? "this.#{sorting.variable} - other.#{sorting.variable}" : "other.#{sorting.variable} - this.#{sorting.variable}"}
    end
  end

  def comp sorting
    if sorting.type == "String"
      {:if => "!this.#{sorting.variable}.equals(other.#{sorting.variable})",
       :ret => (return_stat sorting)[:ret]}
    else
      {:if => "this.#{sorting.variable} != other.#{sorting.variable}",
       :ret => (return_stat sorting)[:ret]}
    end
  end


  if defined? third
    "if (#{(comp first)[:if]}) {
        return #{(comp first)[:ret]};
     } else if (#{(comp second)[:if]}) {
        return #{(comp second)[:ret]};
     }
     return #{(comp third)[:ret]};"
  else
    "if (#{(comp first)[:if]}) {
        return #{(comp first)[:ret]};
     }
     return #{(comp second)[:ret]};
     "
  end
end