Module: Goat::DOMTools::DiffTools

Included in:
DOMDiff
Defined in:
lib/goat/dom.rb

Defined Under Namespace

Classes: NoParentDOMID, TextualTranspose

Instance Method Summary collapse

Instance Method Details

#added(obj, par, pos) ⇒ Object

Raises:



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# File 'lib/goat/dom.rb', line 424

def added(obj, par, pos)
  raise NoParentDOMID if par.nil?
  raise TextualTranspose if obj.kind_of?(String)
  [:add, par, pos, *normalized_tags(obj)]
end

#dom_node?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/goat/dom.rb', line 409

def dom_node?(node)
  # TODO take from dom.rb
  node.is_a?(Array) && node.first.is_a?(Symbol)
end

#lcs_is_addition?(diff) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/goat/dom.rb', line 436

def lcs_is_addition?(diff); diff.action == '+'; end

#lcs_is_removal?(diff) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/goat/dom.rb', line 437

def lcs_is_removal?(diff); diff.action == '-'; end

#lcs_is_replacement?(d1, d2) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/goat/dom.rb', line 414

def lcs_is_replacement?(d1, d2)
  d1 && d2 && d1.position == d2.position && (
    (d1.action == '+' && d2.action == '-') ||
    (d1.action == '-' && d2.action == '+'))
end

#lcs_old_and_new(d1, d2) ⇒ Object 



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# File 'lib/goat/dom.rb', line 420

def lcs_old_and_new(d1, d2)
  d1.action == '+' ? [d2, d1] : [d1, d2]
end

#removed(obj, par, pos) ⇒ Object

Raises:



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# File 'lib/goat/dom.rb', line 430

def removed(obj, par, pos)
  raise NoParentDOMID if par.nil?
  raise TextualTranspose if obj.kind_of?(String)
  [:rem, par, pos, *normalized_tags(obj)]
end

#type_of(x) ⇒ Object 



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# File 'lib/goat/dom.rb', line 399

def type_of(x)
  if x.is_a?(String)
    :string
  elsif x.is_a?(Array)
    dom_node?(x) ? :node : :array
  else
    ('cls_' + x.class.name.downcase).to_sym
  end
end