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# frozen_string_literal: true
module Nokogiri
module CSS
class Node # :nodoc:
ALLOW_COMBINATOR_ON_SELF = [:DIRECT_ADJACENT_SELECTOR, :FOLLOWING_SELECTOR, :CHILD_SELECTOR]
# Get the type of this node
attr_accessor :type
# Get the value of this node
attr_accessor :value
# Create a new Node with +type+ and +value+
def initialize(type, value)
@type = type
@value = value
end
# Accept +visitor+
def accept(visitor)
visitor.send(:"visit_#{type.to_s.downcase}", self)
end
###
# Convert this CSS node to xpath with +prefix+ using +visitor+
def to_xpath(visitor)
prefix = if ALLOW_COMBINATOR_ON_SELF.include?(type) && value.first.nil?
"."
else
visitor.prefix
end
prefix + visitor.accept(self)
end
# Find a node by type using +types+
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
# Convert to_type
def to_type
[@type] + @value.filter_map do |n|
n.to_type if n.respond_to?(:to_type)
end
end
# Convert to array
def to_a
[@type] + @value.map { |n| n.respond_to?(:to_a) ? n.to_a : [n] }
end
end
end
end
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