Invoking REXX During High Level Assembly via SETCF

The power of the High Level Assembler language can be extended by adding REXX to its capabilities. This session provides a practical example of how to implement a SETCF function that invokes any REXX function the during the assembly.
 
The HLASM SETCF function passes arguments to a module that returns a string of data. The module that we demonstrate provides a mechanism for invoking a REXX exec and returning an error  indication from the exec and a string. We also demonstrate saving global variables between SETCF invocations.  

Some useful execs:
1)      Use PARSE to decode macro variable strings
2)      Return the contents of datasets
3)      Communicate with databases during assembly
 
Free source code is provided, with the usual disclaimers, at http://www.colesoft.com/SHARE-March2015

Tracks: Application Development, Software Architecture and User Experience