Class: Hash::As::Tree::Node

Inherits:
Object
  • Object
show all
Defined in:
lib/hash/as/tree.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(value: nil, key: nil, parent: nil) ⇒ Node

Returns a new instance of Node.



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# File 'lib/hash/as/tree.rb', line 44

def initialize value: nil, key: nil, parent: nil
  @value, @key, @parent = value, key, parent
end

Instance Attribute Details

#key ⇒ Object

Returns the value of attribute key.



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# File 'lib/hash/as/tree.rb', line 47

def key
  @key
end

#parent ⇒ Object

Returns the value of attribute parent.



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# File 'lib/hash/as/tree.rb', line 47

def parent
  @parent
end

#value ⇒ Object

Returns the value of attribute value.



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# File 'lib/hash/as/tree.rb', line 47

def value
  @value
end

Instance Method Details

#children ⇒ Object 



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# File 'lib/hash/as/tree.rb', line 68

def children
  if value.is_a? Hash
    value.map do |key, value|
      Node.new value: value, key: key, parent: self
    end
  else
    []
  end
end

#to_a ⇒ Object 



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# File 'lib/hash/as/tree.rb', line 78

def to_a
  [key, value]
end

#to_h ⇒ Object 



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# File 'lib/hash/as/tree.rb', line 49

def to_h
  if key
    if value.is_a?(Hash) && (not value.empty?)
      { key => children.map(&:to_h).reduce(&:merge) }
    else
      { key => value }
    end
  else
    children.map(&:to_h).reduce(&:merge)
  end
end

#with(**kwargs) ⇒ Object 



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# File 'lib/hash/as/tree.rb', line 61

def with **kwargs
  Node.new \
    value:  (kwargs[:value] or value),
    key:    (kwargs[:key] or key),
    parent: (kwargs[:parent] or parent)
end