JAL language extension: suggestion

[David VB]

Hi,

One nice addition to JAL would be, IMHO, the ability to treat sets of values.   
It would be simplier to give some example, instead of describing:

var byte dummy

dummy = 100

if dummy IN [0..127] then ......     ; Will be TRUE

if dummy IN [50..100]      Will be true

if dummy IN [50..100-1]      Will be false

Of course, those literals could be replaced by variables also:

if dummy IN [low_value .. High_value] then  ....

One step further would be to allow set of discrete values such as:

if dummy IN [12, 45, 87, 100, 255]    will be true

and the same with variables

if dummy IN [min_value, 45, 87, 100, high_value]

The complement of the IN operator will be NOT IN as in:

if dummy NOT IN [min_value..max_value]

An advantage that I see is that there will be no regression with the current syntax, and that it is probably not too difficult to implement.

What do you think ?

[Rob CJ]

Hi David,

It would be a nice addtion but I do not feel confident enough to add this to the compiler.

I sometimes manage to fix bugs but I still do not understand a big part of what is done where in all the source files of the compiler.

I can add it to GitHub issue as an enhancement request until somebody want to accept this challenge.

Kind regards,

Rob

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Van: jal...@googlegroups.com <jal...@googlegroups.com> namens David VB <pinhe...@gmail.com>
Verzonden: dinsdag 18 februari 2025 14:25
Aan: jallist <jal...@googlegroups.com>
Onderwerp: [jallist] JAL language extension: suggestion

 

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[Matthew Schinkel]

If this can be done with a function or procedure, then there is no need to add it to the compiler.

[David VB]

Good point.