Class: When::CalendarTypes::CalendarNote::Enumerator

Inherits:

Parts::Enumerator

• Object
• Enumerator
• Parts::Enumerator
• When::CalendarTypes::CalendarNote::Enumerator

Defined in:

lib/when_exe/calendartypes.rb

Overview

イベントを取得する Enumerator

Direct Known Subclasses

CalendarNote::ShireWeek::Enumerator, CalendarNote::WorldWeek::Enumerator

Instance Attribute Summary

Attributes inherited from Parts::Enumerator

#count, #count_limit, #current, #direction, #exdate, #first, #index, #last, #object, #options, #parent, #processed

Instance Method Summary

• #_succ ⇒ When::TM::TemporalPosition

  次のイベントを得る.

• #initialize(parent, first, direction, event, count_limit = nil) ⇒ Enumerator constructor

  オブジェクトの生成.

Methods inherited from Parts::Enumerator

_options, #_rewind, #each, #has_next?, #next, #succ, #with_index, #with_object

Constructor Details

#initialize(parent, first, direction, event, count_limit = nil) ⇒ Enumerator

オブジェクトの生成

Parameters:

• parent (When::CalendarTypes::CalendarNote) —

  暦注アルゴリズム

• first (When::TM::TemporalPosition) —

  始点

• direction (Symbol) —

  :forward

  昇順

  :reverse

  降順

• event (String) —

  イベント名

• count_limit (Integer) (defaults to: nil) —

  繰り返し回数(デフォルトは指定なし)

# File 'lib/when_exe/calendartypes.rb', line 1545

def initialize(parent, first, direction, event, count_limit=nil)
  @parent = parent
  void, @event, @parameter = event.split(/^([^\d]+)/)
  @delta = @parent.send((@event+'_delta').to_sym, @parameter)
  instance_eval %Q{
    def event_eval(date)
      @parent.#{@event}(date, @parameter)
    end
  }
  date = event_eval(first)
  if direction == :reverse
    @delta = -@delta
    date   = event_eval(first + @delta) if first.to_i < date.to_i
  else
    date   = event_eval(first + @delta) if first.to_i > date.to_i
  end
  super(@parent, date, direction, count_limit)
end

Instance Method Details

#_succ ⇒ When::TM::TemporalPosition

次のイベントを得る

Returns:

• (When::TM::TemporalPosition)

# File 'lib/when_exe/calendartypes.rb', line 1531

def _succ
  @current = (@current==:first) ? @first : event_eval(@current + @delta)
end