It's from the advanced certification book, 2nd edition, p295-296.
You might have a look about the pages from this link:
It is about how SAS processing Macro variables. I was trying to understand
the portion from the middle of p296, where it mentioned this:
Once SAS code is in the input stack, SAS
1. reads the text in the input stack
2. routes text to the appropriate compiler upon demand
I would like to have some help to understand the second item: what does it
mean by "routes text"? what does it mean by "appropriate compiler"? Are
there different compilers for SAS code?
From: Keintz, H. Mark [mailto:email@example.com]
Sent: January-24-11 9:14 AM
To: bbser 2009; SAS-L@LISTSERV.UGA.EDU
Subject: RE: routes test? appropriate compiler? input stack
I presume your first paragraph below is a quote from some documentary
source. If so, then providing the specific source of that quote would help
those from whom you want help. I see that in a later email you provided an
additional clue, although I for one would be more confident of my own
answers or conjectures if I had the actual URL or SAS publication title and
page number of the quote.
Absence of such details gives the appearance of posting questions to SAS-L
as sort of a stream-of-consciousness exercise rather than showing evidence
of due diligence in finding answers.
> -----Original Message-----
> From: SAS(r) Discussion [mailto:SAS-L@LISTSERV.UGA.EDU] On Behalf Of
> bbser 2009
> Sent: Monday, January 24, 2011 8:56 AM
> To: SAS-L@LISTSERV.UGA.EDU
> Subject: routes test? appropriate compiler? input stack
> Once SAS code is in the input stack, SAS reads the text in the input
> routes text to the appropriate compiler upon demand, ...
> Could you please explain in plain English that what SAS actually do in
> scenario described in the last part "routes text ..."?