# File lib/sass/selector/comma_sequence.rb, line 23 def resolve_parent_refs(super_cseq) if super_cseq.nil? if @members.any? do |sel| sel.members.any? do |sel_or_op| sel_or_op.is_a?(SimpleSequence) && sel_or_op.members.any? {|ssel| ssel.is_a?(Parent)} end end raise Sass::SyntaxError.new("Base-level rules cannot contain the parent-selector-referencing character '&'.") end return self end CommaSequence.new( super_cseq.members.map do |super_seq| @members.map {|seq| seq.resolve_parent_refs(super_seq)} end.flatten) end