модуль DateAndTime::Calculations

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 234
def all_month
  beginning_of_month..end_of_month
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 239
def all_quarter
  beginning_of_quarter..end_of_quarter
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 229
def all_week(start_day = Date.beginning_of_week)
  beginning_of_week(start_day)..end_of_week(start_day)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 244
def all_year
  beginning_of_year..end_of_year
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 80
def beginning_of_month
  first_hour(change(:day => 1))
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 88
def beginning_of_quarter
  first_quarter_month = [10, 7, 4, 1].detect { |m| m <= month }
  beginning_of_month.change(:month => first_quarter_month)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 185
def beginning_of_week(start_day = Date.beginning_of_week)
  result = days_ago(days_to_week_start(start_day))
  acts_like?(:time) ? result.midnight : result
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 106
def beginning_of_year
  change(:month => 1).beginning_of_month
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 39
def days_ago(days)
  advance(:days => -days)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 44
def days_since(days)
  advance(:days => days)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 175
def days_to_week_start(start_day = Date.beginning_of_week)
  start_day_number = DAYS_INTO_WEEK[start_day]
  current_day_number = wday != 0 ? wday - 1 : 6
  (current_day_number - start_day_number) % 7
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 214
def end_of_month
  last_day = ::Time.days_in_month(month, year)
  last_hour(days_since(last_day - day))
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 97
def end_of_quarter
  last_quarter_month = [3, 6, 9, 12].detect { |m| m >= month }
  beginning_of_month.change(:month => last_quarter_month).end_of_month
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 201
def end_of_week(start_day = Date.beginning_of_week)
  last_hour(days_since(6 - days_to_week_start(start_day)))
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 222
def end_of_year
  change(:month => 12).end_of_month
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 34
def future?
  self > self.class.current
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 193
def monday
  beginning_of_week(:monday)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 59
def months_ago(months)
  advance(:months => -months)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 64
def months_since(months)
  advance(:months => months)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 131
def next_month
  months_since(1)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 136
def next_quarter
  months_since(3)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 126
def next_week(given_day_in_next_week = Date.beginning_of_week)
  first_hour(weeks_since(1).beginning_of_week.days_since(days_span(given_day_in_next_week)))
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 141
def next_year
  years_since(1)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 29
def past?
  self < self.class.current
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 155
def prev_month
  months_ago(1)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 161
def prev_quarter
  months_ago(3)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 149
def prev_week(start_day = Date.beginning_of_week)
  first_hour(weeks_ago(1).beginning_of_week.days_since(days_span(start_day)))
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 167
def prev_year
  years_ago(1)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 208
def sunday
  end_of_week(:monday)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 24
def today?
  to_date == ::Date.current
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 19
def tomorrow
  advance(:days => 1)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 49
def weeks_ago(weeks)
  advance(:weeks => -weeks)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 54
def weeks_since(weeks)
  advance(:weeks => weeks)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 69
def years_ago(years)
  advance(:years => -years)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 74
def years_since(years)
  advance(:years => years)
end

# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 14
def yesterday
  advance(:days => -1)
end