Class: Nokogiri::CSS::Node

Inherits:
Object
  • Object
show all
Defined in:
lib/nokogiri/css/node.rb

Constant Summary collapse

ALLOW_COMBINATOR_ON_SELF =
[:DIRECT_ADJACENT_SELECTOR, :FOLLOWING_SELECTOR, :CHILD_SELECTOR]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(type, value) ⇒ Node

Create a new Node with type and value


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# File 'lib/nokogiri/css/node.rb', line 13

def initialize type, value
  @type = type
  @value = value
end

Instance Attribute Details

#typeObject

Get the type of this node


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# File 'lib/nokogiri/css/node.rb', line 8

def type
  @type
end

#valueObject

Get the value of this node


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# File 'lib/nokogiri/css/node.rb', line 10

def value
  @value
end

Instance Method Details

#accept(visitor) ⇒ Object

Accept visitor


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# File 'lib/nokogiri/css/node.rb', line 19

def accept visitor
  visitor.send(:"visit_#{type.to_s.downcase}", self)
end

#find_by_type(types) ⇒ Object

Find a node by type using types


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# File 'lib/nokogiri/css/node.rb', line 31

def find_by_type types
  matches = []
  matches << self if to_type == types
  @value.each do |v|
    matches += v.find_by_type(types) if v.respond_to?(:find_by_type)
  end
  matches
end

#to_aObject

Convert to array


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# File 'lib/nokogiri/css/node.rb', line 48

def to_a
  [@type] + @value.map { |n| n.respond_to?(:to_a) ? n.to_a : [n] }
end

#to_typeObject

Convert to_type


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# File 'lib/nokogiri/css/node.rb', line 41

def to_type
  [@type] + @value.map { |n|
    n.to_type if n.respond_to?(:to_type)
  }.compact
end

#to_xpath(prefix = '//', visitor = XPathVisitor.new) ⇒ Object

Convert this CSS node to xpath with prefix using visitor


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# File 'lib/nokogiri/css/node.rb', line 25

def to_xpath prefix = '//', visitor = XPathVisitor.new
  prefix = '.' if ALLOW_COMBINATOR_ON_SELF.include?(type) && value.first.nil?
  prefix + visitor.accept(self)
end