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Class: Psych::Nodes::Node

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses:
Alias, Document, Mapping, Scalar, Sequence, Stream
Super Chains via Extension / Inclusion / Inheritance
Instance Chain:
self, Enumerable
Inherits: Object
Defined in: ext/psych/lib/psych/nodes/node.rb

Overview

The base class for any Node in a YAML parse tree. This class should never be instantiated.

Class Method Summary

Instance Attribute Summary

  • #children readonly

    The children of this node.

  • #tag readonly

    An associated tag.

Instance Method Summary

Constructor Details

.new ⇒ Node

Create a new Node

[ GitHub ] 

  


# File 'ext/psych/lib/psych/nodes/node.rb', line 21



def initialize
  @children = []
end


  







Instance Attribute Details



  

    #children   (readonly)
  



  

    

The children of this node


  



  [ GitHub ]


  

  


# File 'ext/psych/lib/psych/nodes/node.rb', line 15



attr_reader :children


  








  

    #tag   (readonly)
  



  

    

An associated tag


  



  [ GitHub ]


  

  


# File 'ext/psych/lib/psych/nodes/node.rb', line 18



attr_reader :tag


  







Instance Method Details



  

    #each(&block)  
  



  

    

Iterate over each node in the tree. Yields each node to block depth first.


  



  [ GitHub ]


  

  


# File 'ext/psych/lib/psych/nodes/node.rb', line 28



def each &block
  return enum_for :each unless block_given?
  Visitors::DepthFirst.new(block).accept self
end


  








  

    #to_ruby  
    Also known as: #transform
  



  

    

Convert this node to Ruby.



See also ::Psych::Visitors::ToRuby


  



  [ GitHub ]


  

  


# File 'ext/psych/lib/psych/nodes/node.rb', line 37



def to_ruby
  Visitors::ToRuby.create.accept(self)
end


  








  

    #to_yaml(io = nil, options = {})  
  



  

    

Alias for #yaml.


  



  [ GitHub ]


  

  


# File 'ext/psych/lib/psych/nodes/node.rb', line 53



alias :to_yaml :yaml


  








  

    #transform  
  



  

    

Alias for #to_ruby.


  



  [ GitHub ]


  

  


# File 'ext/psych/lib/psych/nodes/node.rb', line 40



alias :transform :to_ruby


  








  

    #yaml(io = nil, options = {})  
    Also known as: #to_yaml
  



  

    

Convert this node to YAML.



See also ::Psych::Visitors::Emitter


  



  [ GitHub ]


  

  


# File 'ext/psych/lib/psych/nodes/node.rb', line 46



def yaml io = nil, options = {}
  real_io = io || StringIO.new(''.encode('utf-8'))

  Visitors::Emitter.new(real_io, options).accept self
  return real_io.string unless io
  io
end