parse_signature

# File ext/dl/lib/dl/cparser.rb, line 56
    def parse_signature(signature, tymap=nil)
      tymap ||= {}
      signature = signature.gsub(/\s+/, " ").strip
      case signature
      when /^([\w@\*\s]+)\(([\w\*\s\,\[\]]*)\)$/
        ret = $1
        (args = $2).strip!
        ret = ret.split(/\s+/)
        args = args.split(/\s*,\s*/)
        func = ret.pop
        if( func =~ /^\*/ )
          func.gsub!(/^\*+/,"")
          ret.push("*")
        end
        ret  = ret.join(" ")
        return [func, parse_ctype(ret, tymap), args.collect{|arg| parse_ctype(arg, tymap)}]
      else
        raise(RuntimeError,"can't parse the function prototype: #{signature}")
      end
    end