[fasmg] Using "?" with arrange

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Calanor

Joined: 19 Jul 2015
Posts: 45
Location: Sweden

Calanor 25 Jan 2021, 23:48

I'd like to construct a macro from within CALM. Say, something like this:

Code:

arrange cmd, =macro t#=globalblock#s

However, I'd also like to make the macro case-insensitive, but adding "#=?" (or "#?" for that matter) at the end won't yield the results I hoped for. In fact, it actually seems to name the macro to [name] followed by a literal "?". If I call the macro by adding a "?" at the end of the name, fasmg will enter it. This seems pretty weird - is this really working as intended?

25 Jan 2021, 23:48

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8356
Location: Kraków, Poland

Tomasz Grysztar 26 Jan 2021, 08:30

Adding "?" at the end of identifier on use is just another way of calling the case-insensitive symbol:

Code:

macro show tokens&
        display `tokens,13,10
end macro

calminstruction try t,s
        arrange cmd, =macro t#=globalblock#s?
        assemble cmd
        arrange cmd, =show cmd
        assemble cmd
        arrange cmd, =end =macro
        assemble cmd
end calminstruction

try A,0

; these all call the same macro:
Aglobalblock0
aglobalblock0
aglobalblock0?

(Note: this works the same if you use "#?" or even "#=?" instead of plain "?" at the end of that ARRANGE, they make no difference here.)

When you have a case-insensitive symbol, you can always to refer to it directly by using an identifier followed by "?". This allows, for example, to call the case-insensitive macro even when there is another, case-sensitive one that would override it for the specific combination of characters that you used:

Code:

macro A#globalblock#1?
        display '1: case insensitive',10
end macro

macro A#globalblock#1
        display '2: case sensitive',10
end macro

Aglobalblock1   ; calls the second one
aglobalblock1   ; calls the first one
Aglobalblock1?  ; calls the first one

26 Jan 2021, 08:30

Calanor

Joined: 19 Jul 2015
Posts: 45
Location: Sweden

Calanor 26 Jan 2021, 11:56

Well, that's interesting! Thanks for the information, Tomasz. I had no problems running your code, so there's something odd going on at my end.

To clarify: as soon as I add "#=?", "#?" or "?" at the end of the line, I get a cascade of error messages. The line that constructs the macro does show up in the error log, but it looks perfectly fine. I'm quite confused, but I'll experiment a bit and see if I can figure things out before posting a wall of code.

26 Jan 2021, 11:56

Calanor

Joined: 19 Jul 2015
Posts: 45
Location: Sweden

Calanor 26 Jan 2021, 13:34

Tomasz: Oh, I've realised what went wrong. The problem was when I later use purge on the macro defined in the CALM-instruction. I didn't include the "?" when purging, which obviously was a bad idea! It's mentioned in the manual that symbols can be defined/used in the way you did here, but for some reason I keep associating symbols with "variables". Rolling Eyes

I better study my code in case I've made any similar mistake somewhere. Thanks again Tomasz!

26 Jan 2021, 13:34

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