class Rouge::Lexers::SAS

def self.sas_auto_macro_vars
  # from SAS 9.4 Macro Language Reference
  # Chapter 12
  @sas_auto_macro_vars ||= Set.new %w(
    &SYSADDRBITS &SYSBUFFR &SYSCC &SYSCHARWIDTH &SYSCMD &SYSDATASTEPPHASE &SYSDATE
    &SYSDATE9 &SYSDAY &SYSDEVIC &SYSDMG &SYSDSN &SYSENCODING &SYSENDIAN &SYSENV
    &SYSERR &SYSERRORTEXT &SYSFILRC &SYSHOSTINFOLONG &SYSHOSTNAME &SYSINDEX
    &SYSINFO &SYSJOBID &SYSLAST &SYSLCKRC &SYSLIBRC &SYSLOGAPPLNAME &SYSMACRONAME
    &SYSMENV &SYSMSG &SYSNCPU &SYSNOBS &SYSODSESCAPECHAR &SYSODSPATH &SYSPARM
    &SYSPBUFF &SYSPRINTTOLIST &SYSPRINTTOLOG &SYSPROCESSID &SYSPROCESSMODE
    &SYSPROCESSNAME &SYSPROCNAME &SYSRC &SYSSCP &SYSSCPL &SYSSITE &SYSSIZEOFLONG
    &SYSSIZEOFPTR &SYSSIZEOFUNICODE &SYSSTARTID &SYSSTARTNAME &SYSTCPIPHOSTNAME
    &SYSTIME &SYSTIMEZONE &SYSTIMEZONEIDENT &SYSTIMEZONEOFFSET &SYSUSERID &SYSVER
    &SYSVLONG &SYSVLONG4 &SYSWARNINGTEXT
  )
end