Experimental Physics and Industrial Control System
Hi:
I think the reason is simply that macros are replaced way early, before the parser looks at the meaning of anything on a line.
Macros can be anywhere within the database text.
Macros can even include '#' for comments.
record(calc, ramp)
{
$(C) field(SCAN, "1 second")
field(CALC, "A+1")
field(INPA, "ramp")
}
Running it like this "works", $(C) is replaced by <nothing>:
softIoc -m "C=" -d test.db
Running it like this comments the SCAN field line, and the record doesn't get scanned:
softIoc -m "C=#" -d test.db
Might consider it a feature, not a bug.
-Kay
From: [email protected] <[email protected]> on behalf of Alfio Rizzo via Tech-talk <[email protected]>
Sent: Wednesday, August 7, 2019 11:17 AM
To: [email protected] <[email protected]>
Subject: [EXTERNAL] comment a field with a macro
Hi,
I see some strange behavior when I want to comment
a field in a record if there there are different macros in it
E.g.
record(ai, "$(user):PiraniGauge") {
field(DESC, "Readback form Pirani Gauge")
field(EGU, "Torr")
field(VAL, 4e-07)
#field(SIML, "$(test):SimulationMode")
}
When then I load the db,
I must defined also the macro $test even if I don’t use it (its commented),
Otherwise I will get this warning from the iocsh
…………
macLib: macro test is undefined (expanding string # field(SIML, "$(test):SimulationMode")
………..
i.e. I have to write
dbLoadRecords("piranig.db","user=me, test=mytest")
Is this normal ? why it does not skip the entire commented line ?
- Replies:
- Re: comment a field with a macro Jemian, Pete R. via Tech-talk
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