ruby implementation for visitor pattern blog post

visitor_pattern_implementation_ruby_20081130_blogpost.rb

class Employee
  attr_reader :name
  attr_accessor :sickDaysUsed
  attr_accessor :vacationDaysUsed
  def initialize(name)
    @name = name
    @sickDaysUsed = 0
    @vacationDaysUsed = 0
  end
  def addSickDaysUsed(sickDaysUsed)
    @sickDaysUsed += sickDaysUsed
  end
  def addVacationDaysUsed(vacationDaysUsed)
    @vacationDaysUsed += vacationDaysUsed
  end
end
class HourlyEmployee < Employee
  attr_reader :hourlyRate
  attr_reader :hoursWorked
  def initialize(name, hourlyRate)
    super(name)
    @hourlyRate = hourlyRate
  end
  def addHoursWorked(hoursWorked)
    @hoursWorked = hoursWorked
  end
  def accept(visitor)
    visitor.HourlyVisit(self)
  end
end
class FulltimeEmployee < Employee
  attr_reader :salary
  attr_accessor :businessDaysWorked
  def initialize(name, salary)
    super(name)
    @salary = salary
  end
  def addBusinessDaysWorked(businessDaysWorked)
    @businessDaysWorked = businessDaysWorked
  end
  def accept(visitor)
    visitor.FulltimeVisit(self)
  end
end
class EmployeePaycheckVisitor
  attr_reader :earnedWages
  attr_reader :sickDayDeductions
  attr_reader :paycheckInfo
  def HourlyVisit(hourlyEmployee)
    name = hourlyEmployee.name
    hours = hourlyEmployee.hoursWorked
    @sickDayDeductions = hourlyEmployee.sickDaysUsed * 8 * hourlyEmployee.hourlyRate
    @earnedWages = hours * hourlyEmployee.hourlyRate – @sickDayDeductions
    @paycheckInfo = %Q{Hourly employee #{name} worked #{hours} hours, earned
    $#{“%0.2f” % @earnedWages} with #{hourlyEmployee.sickDaysUsed} sick day(s)
    ($#{“%0.2f” % @sickDayDeductions} deducted) and
    #{hourlyEmployee.vacationDaysUsed} vacation day(s)}
  end
  def FulltimeVisit(fulltimeEmployee)
    name = fulltimeEmployee.name
    businessDaysWorked = fulltimeEmployee.businessDaysWorked
    dailyRate = (fulltimeEmployee.salary / 52) / 5
    @sickDayDeductions = fulltimeEmployee.sickDaysUsed * dailyRate
    @earnedWages = businessDaysWorked * dailyRate – @sickDayDeductions
    @paycheckInfo = %Q{Fulltime employee #{name} worked #{businessDaysWorked}
    business days, earned $#{“%0.2f” % @earnedWages} with
    #{fulltimeEmployee.sickDaysUsed} sick day(s) ($#{“%0.2f” %
    @sickDayDeductions} deducted) and #{fulltimeEmployee.vacationDaysUsed}
    vacation day(s)}
  end
end