Class: Hutils::Node

Inherits:
Object
  • Object
show all
Defined in:
lib/hutils.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parent, common) ⇒ Node

Returns a new instance of Node.



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# File 'lib/hutils.rb', line 8

def initialize(parent, common)
  @common = common
  @parent = parent
  @slots = []
  @tags = {}
end

Instance Attribute Details

#common ⇒ Object

The set of common attributes that are shared by all slots in this branch of the tree.



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# File 'lib/hutils.rb', line 17

def common
  @common
end

#parent ⇒ Object

Parent node.



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# File 'lib/hutils.rb', line 20

def parent
  @parent
end

#slots ⇒ Object

Ordered child nodes of this node.



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# File 'lib/hutils.rb', line 23

def slots
  @slots
end

#tags ⇒ Object

Arbitrary tags that applications can associate on a node.



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# File 'lib/hutils.rb', line 26

def tags
  @tags
end

Instance Method Details

#common_complete ⇒ Object

The set of common attributes that are shared by all slots in this branch of the tree, but accounting for all parent nodes as well.



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# File 'lib/hutils.rb', line 30

def common_complete
  @common.merge(@parent ? @parent.common_complete : {})
end

#depth ⇒ Object 



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# File 'lib/hutils.rb', line 34

def depth
  @parent ? @parent.depth + 1 : 0
end

#print ⇒ Object 



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# File 'lib/hutils.rb', line 38

def print
  indent = "  " * depth
  $stdout.puts "#{indent}[ #{depth} ]#{@common}"
  slots.each { |node| node.print }
end

#replace_slot(old, new) ⇒ Object 



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# File 'lib/hutils.rb', line 44

def replace_slot(old, new)
  @slots.each_with_index do |node, i|
    if old == node
      @slots[i] = new
      return
    end
  end
  abort("bad replace")
end

#root ⇒ Object 



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# File 'lib/hutils.rb', line 54

def root
  @parent ? @parent.root : self
end

#root? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/hutils.rb', line 58

def root?
  @parent == nil
end