Class: Zakuro::Calculation::Cycle::AbstractSolarTerm

Inherits:
Object
  • Object
show all
Defined in:
lib/zakuro/calculation/cycle/abstract_solar_term.rb

Overview

AbstractSolarTerm 二十四節気

Constant Summary collapse

ORDER =

Returns 順序.

Returns:

  • (Hash<Integer, Symbol>) —

    順序

{
  0 => :touji,
  1 => :shoukan,
  2 => :daikan,
  3 => :risshun,
  4 => :usui,
  5 => :keichitsu,
  6 => :shunbun,
  7 => :seimei,
  8 => :kokuu,
  9 => :rikka,
  10 => :shouman,
  11 => :boushu,
  12 => :geshi,
  13 => :shousho,
  14 => :taisho,
  15 => :risshuu,
  16 => :shosho,
  17 => :hakuro,
  18 => :shuubun,
  19 => :kanro,
  20 => :soukou,
  21 => :rittou,
  22 => :shousetsu,
  23 => :taisetsu
}.freeze
FIRST_INDEX =

Returns 開始番号.

Returns:

  • (Integer) —

    開始番号

0
LAST_INDEX =

Returns 終了番号.

Returns:

  • (Integer) —

    終了番号

23

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(index: -1,, remainder: AbstractRemainder.new, average: AbstractRemainder.new) ⇒ AbstractSolarTerm

初期化

Parameters:

  • index (Integer) (defaults to: -1,) —

    連番

  • remainder (AbstractRemainder) (defaults to: AbstractRemainder.new) —

    時刻情報（大余小余）



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# File 'lib/zakuro/calculation/cycle/abstract_solar_term.rb', line 62

def initialize(index: -1, remainder: AbstractRemainder.new,
               average: AbstractRemainder.new)
  @index = index
  @remainder = remainder
  @average = average
end

Instance Attribute Details

#average ⇒ AbstractRemainder (readonly)

Returns 気策（24分の1年）.

Returns:



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# File 'lib/zakuro/calculation/cycle/abstract_solar_term.rb', line 20

def average
  @average
end

#index ⇒ Integer (readonly)

Returns 連番.

Returns:

  • (Integer) —

    連番



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# File 'lib/zakuro/calculation/cycle/abstract_solar_term.rb', line 16

def index
  @index
end

#remainder ⇒ AbstractRemainder (readonly)

Returns 時刻情報（大余小余）.

Returns:



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# File 'lib/zakuro/calculation/cycle/abstract_solar_term.rb', line 18

def remainder
  @remainder
end

Class Method Details

.index?(index) ⇒ True, False

有効な二十四節気番号か

Parameters:

  • index (Integer) —

    連番

Returns:

  • (True) —

    有効

  • (False) —

    無効



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# File 'lib/zakuro/calculation/cycle/abstract_solar_term.rb', line 174

def index?(index)
  result = ORDER.fetch(index, -1)

  result != -1
end

Instance Method Details

#empty? ⇒ True, False

データなしかを検証する

Returns:

  • (True) —

    データなし

  • (False) —

    データあり



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# File 'lib/zakuro/calculation/cycle/abstract_solar_term.rb', line 85

def empty?
  (index == -1 && remainder.invalid?)
end

#initialize_copy(obj) ⇒ Object

ディープコピー

Parameters:

  • obj (SolarTerm) —

    自身



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# File 'lib/zakuro/calculation/cycle/abstract_solar_term.rb', line 160

def initialize_copy(obj)
  @index = obj.index.clone
  @remainder = obj.remainder.clone
end

#invalid? ⇒ True, False

不正かどうか検証する

Returns:

  • (True) —

    正しくない

  • (False) —

    正しい



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# File 'lib/zakuro/calculation/cycle/abstract_solar_term.rb', line 75

def invalid?
  (index == -1 || remainder.invalid?)
end

#next_by_index(index) ⇒ Object

指定した連番の二十四節気まで進める

Parameters:

  • index (Integer) —

    連番



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# File 'lib/zakuro/calculation/cycle/abstract_solar_term.rb', line 111

def next_by_index(index)
  return ArgumentError.new, 'invalid index' unless AbstractSolarTerm.index?(index)

  (0..(ORDER.size - 1)).each do |_index|
    inner_index = @index
    break if inner_index == index

    next!
  end
end

#next_term ⇒ Object

次の二十四節気に進める



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# File 'lib/zakuro/calculation/cycle/abstract_solar_term.rb', line 99

def next_term
  @index += 1
  @index = 0 if index >= ORDER.size

  remainder.add(average)
end

#next_term! ⇒ Object

次の二十四節気に進める



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# File 'lib/zakuro/calculation/cycle/abstract_solar_term.rb', line 92

def next_term!
  @remainder = next_term
end

#prev_by_index(index) ⇒ Object

指定した連番の二十四節気まで戻す

Parameters:

  • index (Integer) —

    連番



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# File 'lib/zakuro/calculation/cycle/abstract_solar_term.rb', line 127

def prev_by_index(index)
  return ArgumentError.new, 'invalid index' unless AbstractSolarTerm.index?(index)

  (0..(ORDER.size - 1)).each do |_index|
    inner_index = @index
    break if inner_index == index

    prev_term!
  end
end

#prev_term ⇒ Object

前の二十四節気に戻る



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# File 'lib/zakuro/calculation/cycle/abstract_solar_term.rb', line 148

def prev_term
  @index -= 1
  @index = ORDER.size - 1 if index.negative?

  remainder.sub(average)
end

#prev_term! ⇒ Object

前の二十四節気に戻る



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# File 'lib/zakuro/calculation/cycle/abstract_solar_term.rb', line 141

def prev_term!
  @remainder = prev_term
end