class Crass::Parser

def parse_value(nodes)
  nodes  = [nodes] unless nodes.is_a?(Array)
  string = String.new
  nodes.each do |node|
    case node[:node]
    when :comment, :semicolon
      next
    when :at_keyword, :ident
      string << node[:value]
    when :function
      if node[:value].is_a?(String)
        string << node[:value]
        string << '('
      else
        string << parse_value(node[:tokens])
      end
    else
      if node.key?(:raw)
        string << node[:raw]
      elsif node.key?(:tokens)
        string << parse_value(node[:tokens])
      end
    end
  end
  string.strip
end