Yes I agree, but would be an interesting project/experiment Thanks everyone
Larry Davis -----Original Message----- From: CMSTSO Pipelines Discussion List [mailto:[email protected]] On Behalf Of Rob van der Heij Sent: Tuesday, November 28, 2017 03:28 To: [email protected] Subject: Re: [CMS-PIPELINES] LEXX for Pipelines I fear the discussion goes beyond what the IBMVM folks care about ... On 27 November 2017 at 23:54, Davis, Larry (National VM Capability) < [email protected]> wrote: > Yes, I agree that it is a Literal > > But, it Starts with a Specific String “ ’PIPE “ > > And, it uses Continuation Characters to group it in to a single > statement ending with a quote and no continuation or Quote, a comma, > and a blank line > > > > ‘PIPE … ‘, > > … ‘, > > … ‘, > > … ‘, > > Blank Line > > > I see what you mean, and if it were just that, you could imagine a syntax parser that actually looks inside the strings to identify the various aspects of the syntax like label, stage, connector etc. Similar things are done by syntax editors for C that look inside the format string and tell you the parameters don't match.You could imagine that the editor finds the place where the label is defined, or finds the "pad" stage in your pipeline without tripping over a "pad" option in a "spec" stage. But in many REXX programs, the pipeline is constructed by substitution of REXX variables (or functions) that eventually make up the string that is issued as a PIPE command. I wonder whether the simpler pure PIPE commands are complicated enough that you'd benefit from a syntax aware-editor for just those cases. When I was working on my web-based animation of a pipeline, I quickly realized that the more interesting cases are not only constructed by REXX programs, but actually are created by the pipeline while it is running (for example the "unpack" that decides to change the topology based on the data flowing through the pipeline). Maybe we need a different type of editor to compose our pipelines such that you tell the editor what you're doing rather than have a syntax parser trying to figure out after you wrote it. I was looking at things like Node-RED which contains an editor for data flow programming. You could take the internal format of such a program to create the pipeline to sit in your REXX routine. Unfortunately the programming concepts for Node-RED still seem rather trivial in comparison to what we do with CMS Pipelines. Sir Rob the Plumber
