The SAS Macro Facility
SAS Processing of Macros
A SAS program can be
any combination of the following elements:
-
DATA steps or PROC steps
-
global statements
-
Structured Query Language (SQL) code
-
SAS macro language code
When you submit a SAS
program, the code is copied to a memory location called the input
stack. The presence of text in the input stack triggers
a component called the word scanner to
begin its work.
Figure 7.1 SAS Processing with an Input Stack
The word scanner has two major functions. First, it pulls the raw text from the input stack character by character and transforms it into tokens. Second, it sends tokens ...
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