Class: TreeDiff::Unify

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

Instance Method Summary collapse

Constructor Details

#initialize(source) ⇒ Unify

Returns a new instance of Unify.



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# File 'lib/tree_diff/unify.rb', line 3

def initialize source
  @source = source
end

Instance Method Details

#accept(target) ⇒ Object 



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# File 'lib/tree_diff/unify.rb', line 7

def accept target
  target.accept(self)
end

#visit(node) ⇒ Object 



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# File 'lib/tree_diff/unify.rb', line 11

def visit node
  children = (node.children || []).find_all { |c|
    !c.text? && c.respond_to?(:accept)
  }
  
  edge = node.parent.children.find_all { |c|
    !c.text? && c.respond_to?(:accept)
  }.index(node)
  
  Node.new(
    node.name,
    edge,
    children.map { |child| child.accept(self) },
    [@source]
  )
end