def cssize(extends, parent)
@resolved_selector.members.each do |seq|
if seq.members.size > 1
raise Sass::SyntaxError.new("Can't extend #{seq.to_a.join}: can't extend nested selectors")
end
sseq = seq.members.first
if !sseq.is_a?(Sass::Selector::SimpleSequence)
raise Sass::SyntaxError.new("Can't extend #{seq.to_a.join}: invalid selector")
end
sel = sseq.members
parent.resolved_rules.members.each do |seq|
if !seq.members.last.is_a?(Sass::Selector::SimpleSequence)
raise Sass::SyntaxError.new("#{seq} can't extend: invalid selector")
end
extends[sel] = seq
end
end
[]
end