Class: Nokogiri::CSS::Node

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

Overview

:nodoc:

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 14

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

Instance Attribute Details

#type ⇒ Object

Get the type of this node



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# File 'lib/nokogiri/css/node.rb', line 9

def type
  @type
end

#value ⇒ Object

Get the value of this node



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# File 'lib/nokogiri/css/node.rb', line 11

def value
  @value
end

Instance Method Details

#accept(visitor) ⇒ Object

Accept visitor



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# File 'lib/nokogiri/css/node.rb', line 20

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 36

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_a ⇒ Object

Convert to array



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# File 'lib/nokogiri/css/node.rb', line 53

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

#to_type ⇒ Object

Convert to_type



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# File 'lib/nokogiri/css/node.rb', line 46

def to_type
  [@type] + @value.filter_map do |n|
    n.to_type if n.respond_to?(:to_type)
  end
end

#to_xpath(visitor) ⇒ Object

Convert this CSS node to xpath with prefix using visitor



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# File 'lib/nokogiri/css/node.rb', line 26

def to_xpath(visitor)
  prefix = if ALLOW_COMBINATOR_ON_SELF.include?(type) && value.first.nil?
    "."
  else
    visitor.prefix
  end
  prefix + visitor.accept(self)
end