Comment a block of lines in FASM?

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alorent

Joined: 05 Dec 2005
Posts: 221

alorent 10 Oct 2008, 09:45

Hello guys,

I know that you can comment a line with a semicolon ";". But is it possible in FASM something like this in MASM?

Code:

comment ~

 these are my comments
 in several lines
 bla, bla,
 bla, bla

~

Thanks in advance!

10 Oct 2008, 09:45

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20337
Location: In your JS exploiting you and your system

revolution 10 Oct 2008, 10:20

Short answer: No.

Long answer: Yes

Answer with more detail: No, but yes if you alter the fasm sources. There are also some macro solutions already posted on this board, but they do not work in all situations, but may be suitable for your needs.

10 Oct 2008, 10:20

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 10 Oct 2008, 10:27

I'd suggest to just use ";" in the beginning of every line. It is clean, and not so much effort.

10 Oct 2008, 10:27

MHajduk

Joined: 30 Mar 2006
Posts: 6115
Location: Poland

MHajduk 10 Oct 2008, 12:46

alorent

Some time ago I presented that some small changes done in 'PREPROCE.INC' (FASM preprocessor sources) allow us to use C-style /*...*/ multiline comments. Smile

Take a look at this topic: Multiline /*...*/ comments in FASM

10 Oct 2008, 12:46

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 10 Oct 2008, 13:01

... and then no one else would be able to compile your sources

10 Oct 2008, 13:01

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20337
Location: In your JS exploiting you and your system

revolution 10 Oct 2008, 13:15

... and you must modify your fasm sources every time there is a new version

10 Oct 2008, 13:15

MHajduk

Joined: 30 Mar 2006
Posts: 6115
Location: Poland

MHajduk 10 Oct 2008, 13:18

vid

... assuming that you want to publish sources of your program. In opposite case I see no problem.

This change is only proposition for those, who want make their work easier (I'm still wondering why this kind of comments isn't standard, but I will never receive an answer, of course).

10 Oct 2008, 13:18

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 10 Oct 2008, 13:19

For custom hobby projects, and if you don't want to use newer FASM versions (as revolution pointed out), okay. Otherwise, it is a bad idea.

10 Oct 2008, 13:19

MHajduk

Joined: 30 Mar 2006
Posts: 6115
Location: Poland

MHajduk 10 Oct 2008, 13:22

Really, how often the file 'PREPROCE.INC' is changed? With every newer version of FASM? I don't think so, because main changes are made by adding new sets of the macros.

10 Oct 2008, 13:22

Grom PE

Joined: 13 Mar 2008
Posts: 114
Location: i@grompe.org.ru

Grom PE 10 Oct 2008, 15:11

Code:

macro comment {

 these are my comments 
 in several lines 
 bla, bla, 
 bla, bla 

}

Doesn't work when lines have non-paired quotes or a "}", though.

10 Oct 2008, 15:11

windwakr

Joined: 30 Jun 2004
Posts: 827

windwakr 10 Oct 2008, 17:06

This is easier than the above, add this to start of your file:

Code:

comment fix macro comment

then use like:

Code:

comment{
mov [blah],ax
add ax,[bleh]
xchg whatever,dx
....
}

_________________
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10 Oct 2008, 17:06

sleepsleep

Joined: 05 Oct 2006
Posts: 12792
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sleepsleep 11 Oct 2008, 16:46

i actually think it is editor job to have the feature, multiblock comment instead of language.

11 Oct 2008, 16:46

alorent

Joined: 05 Dec 2005
Posts: 221

alorent 16 Oct 2008, 12:02

windwakr wrote:

This is easier than the above, add this to start of your file:
Code:
comment fix macro comment    
then use like:
Code:
comment{
mov [blah],ax
add ax,[bleh]
xchg whatever,dx
....
}
    

Wow, that works just great!!! Very Happy

Thanks a lot!

16 Oct 2008, 12:02

baldr

Joined: 19 Mar 2008
Posts: 1651

baldr 20 Oct 2008, 21:23

alorent,

I'm using old C preprocessor technique of #if/#endif, as in

Code:

…
if 0
        invoke  ExitProcess, 0
end if
…

It is as useful as windwakr's macro trick (same problem with nesting boundaries, as Grom PE stated).

20 Oct 2008, 21:23

ouadji

Joined: 24 Dec 2008
Posts: 1081
Location: Belgium

ouadji 13 Jan 2009, 21:45

Code:

comment fix macro comment

wonderful ! tks windwakr Wink

13 Jan 2009, 21:45

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 14 Jan 2009, 01:35

hate to repeat the obvious, but when using "if 0" or "comment fi macro comment", don't use it to comment preprocessor code - it might not work.

14 Jan 2009, 01:35

baldr

Joined: 19 Mar 2008
Posts: 1651

baldr 14 Jan 2009, 06:10

vid,

Yep. Any technique has it's limitations, programmer should clearly understand how his/her source will compile (especially when using advanced macros, like invoke Wink

14 Jan 2009, 06:10

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