Class: REXML::CSSSelector::Queries::DescendantQuery

Inherits:
Object
  • Object
show all
Defined in:
lib/rexml/css_selector/queries/descendant_query.rb

Instance Method Summary collapse

Constructor Details

#initialize(cont:) ⇒ DescendantQuery

Returns a new instance of DescendantQuery.



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# File 'lib/rexml/css_selector/queries/descendant_query.rb', line 15

def initialize(cont:)
  @cont = cont
end

Instance Method Details

#call(node, context) ⇒ Object 



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# File 'lib/rexml/css_selector/queries/descendant_query.rb', line 19

def call(node, context)
  cache = context.cache
  result = nil

  while (node = context.adapter.get_parent_node(node))
    cached = cache[[object_id, node.object_id]]
    if cached.nil?
      result ||= DeferredResult.new
      result.is_match = @cont.call(node, context)
      cache[[object_id, node.object_id]] = result
      return true if result.is_match
    else
      result&.is_match = cached.is_match
      return cached.is_match
    end
  end

  false
end