Hello guys,

Is it safe (I mean, it won't introduce later issues) to create my own macros like:



Well, I'm not sure if the above definitions are OK as it might cause double-replacing for "!=" when "!" is another macro.

Please, advice.

Thanks!!!

alorent,

ASCII punctuation is almost used up in FASM. AFAIK only !?@^_ can be used in constant names safely (single and double quotes can be used too, only not as a first character). Thus most of your equs won't compile.

For example, "!= equ <>" is the definition of numeric constant named "!" with [invalid numeric expression] value of "equ<>".

Hi baldr,

Thanks for the explanation.

Isn't it possible to do it in another flavour? that is, without using EQUs.

Thanks!

alorent,

I highly doubt it. From my analysis of PREPROCE.INC:

Tokenizer disallows the following ASCII codes in symbols: Along with NUL these codes delimit symbols.
Single and double quotes handled separately.
Thus we have:
!$%.?@^_ and alphanumeric, plus control characters not mentioned above and 80…FF — first-class name characters;
' and " — can be used if not first character.

As you can see, there is not a much left to choose from.

Have you tried using 'fix'?

revolution,

fix won't help.
Tokenized != fix <> is symbol("!")=symbol("fix")<>
(by symbol("name") I denote structure that holds symbol name).

symbol("fix") should be second token of line to be recognized by preprocessor (and in our case second token is =).

equs are symbolic constants not numeric constants (numeric constants are defined with '=', like 'a = 5'). It is perfectly possible for it to hold '<>', however the problem here comes from the name. The equal sign is a reserved symbol, so it won't work.

But for example this: is perfectly ok

Borsuc,

I know what equ directive does, but FASM doesn't recognize "!= equ <>" as that directive. This line compiles as definition of numeric constant (and fails because "equ<>" does not compute).

OTOH, "! equ ~" defines symbolic constant "!" with value of "~" just fine.

oh you're right, I didn't think about that. Clever