[sug] Underscores within numbers to improve readability

Index > Compiler Internals > [sug] Underscores within numbers to improve readability

Goto page Previous 1, 2

Author

Thread

rugxulo

Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)

rugxulo

edfed wrote:

i totally agree. i seek an explanation to azerty. and finally, i don't find any as well as for qwerty..
keyboard would be much simpler with abcde. but in the old ages of type machines, this great and wonderfull industrial revolution, some theoricians emit the layout, probably they argue with some freud theory... but as a result, informatics seems to be an obscure science to when you see the keyboard for the first time.

i tryed to change it's layout to abcde, and i didn't find it harder to type.

I don't use it, but you may wish to read about Dvorak.

03 Apr 2008, 20:31

MCD

Joined: 21 Aug 2004
Posts: 604
Location: Germany

MCD

rugxulo wrote:

P.S. Octasm and Ada (EDIT: and NASM!) allow underscores, IIRC.

well, I think fasm needs to support quotes inside numbers.

Who starts a poll?

_________________
MCD - the inevitable return of the Mad Computer Doggy

-||__/
.|+-~
.|| ||

24 Aug 2008, 05:18

vador

Joined: 12 Nov 2006
Posts: 68
Location: Madagascar

vador

how about just writing a preprocessor for fasm sources?

26 Aug 2008, 19:58

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 17271
Location: In your JS exploiting you and your system

revolution

vador wrote:

how about just writing a preprocessor for fasm sources?

Oh, that would be hell. Having to run another program before running fasm! The task would be very complex, especially with things like macros and equ.

26 Aug 2008, 20:28

edfed

Joined: 20 Feb 2006
Posts: 4237
Location: 2018

edfed

and is it possible to make this?
where to put the modification?
parser?
assembler?
???
??

Code:

        mov dword[si+bx],0:7c00h

18 Sep 2008, 21:50

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid

Using ":" is bad idea, because of segment:offset addressing. But place to put such modification is "tokenizer", (the part of code which turns ASCII line to list of tokens, before preprocessing)

19 Sep 2008, 10:39

Tomasz Grysztar
Assembly Artist

Joined: 16 Jun 2003
Posts: 7721
Location: Kraków, Poland

Tomasz Grysztar

No, not really. If you want to use "_" character for such purpose, as it is not a special one, you can make this change directly in the get_number routine. In fact I plan to do it for the next release.

It would also work with quotes the same way - quotes in places other than beginning of a token (where they mean the quoted text token) are not treated specially in fasm.

19 Sep 2008, 10:47

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 17271
Location: In your JS exploiting you and your system

revolution

Tomasz Grysztar wrote:

No, not really. If you want to use "_" character for such purpose, as it is not a special one, you can make this change directly in the get_number routine. In fact I plan to do it for the next release.

Yay, so 1.67.29 will have this! Great Smile

Code:

dq 0x12_34_56_78_90_ab_cd_ef

Quote:

flat assembler version 1.67.29 (100000 kilobytes memory)
underscore_constant_test.asm [1]:
dq 0x12_34_56_78_90_ab_cd_ef
error: invalid name.

20 Dec 2008, 12:23

Tomasz Grysztar
Assembly Artist

Joined: 16 Jun 2003
Posts: 7721
Location: Kraków, Poland

Tomasz Grysztar

revolution wrote:

Tomasz Grysztar wrote:
No, not really. If you want to use "_" character for such purpose, as it is not a special one, you can make this change directly in the get_number routine. In fact I plan to do it for the next release.
Yay, so 1.67.29 will have this! Great

Ooop, I forgot to put that in. Smile

However, I've now implemented it with the single quote character instead of underscore. With underscores it looked a bit too much like "fill in the blanks" for me.

13 Feb 2009, 10:30

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 17271
Location: In your JS exploiting you and your system

revolution

I await with baited breath.

13 Feb 2009, 11:06

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 17271
Location: In your JS exploiting you and your system

revolution

Folks, Tomasz hasn't announced it, but it is now included in 1.67.32.

13 Feb 2009, 11:34

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 17271
Location: In your JS exploiting you and your system

revolution

Of course one problem with the single quote is that my editor thinks I have strings in my numbers!

Code:

dq 0x12'34'56'78'90'ab'cd'ef

Looks weird for me, but okay on this phpBB board.

13 Feb 2009, 11:36

Tomasz Grysztar
Assembly Artist

Joined: 16 Jun 2003
Posts: 7721
Location: Kraków, Poland

Tomasz Grysztar

revolution wrote:

Looks weird for me, but okay on this phpBB board.

This board's syntax highlight mimics the one from fasmw/fasmd, which is very closely reflecting fasm's parser.

13 Feb 2009, 13:05

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 17271
Location: In your JS exploiting you and your system

revolution

This is what I see in Notepad2

Description:
Filesize:	2 KB
Viewed:	4583 Time(s)

13 Feb 2009, 13:09

DOS386

Joined: 08 Dec 2006
Posts: 1901

DOS386

revolution wrote:

This is what I see in Notepad2

Fault of NP2 and 1'000'000'000'000 thanks to Tomasz for this feature with apo's Smile

It even looks well in my IDE based on 1.67.29 also (doesn't compile, heh), in 1.67.32 it also seems to compile. Smile

Let's hope it doesn't break anything Rolling Eyes

15 Feb 2009, 14:31

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid

If apostrophe was added, I think due to already mentioned problems it would be wise to add underscore too. It would be stupid to keep fasm so deliberately separated from every "standard" tool.

15 Feb 2009, 16:08

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 17271
Location: In your JS exploiting you and your system

revolution

vid wrote:

If apostrophe was added, I think due to already mentioned problems it would be wise to add underscore too. It would be stupid to keep fasm so deliberately separated from every "standard" tool.

I had already decided to do this for fasmarm. The underscore is used almost everywhere else and I didn't want to force people to edit all the constants when copying source code.

15 Feb 2009, 16:17

DOS386

Joined: 08 Dec 2006
Posts: 1901

DOS386

vid wrote:

It would be stupid to keep fasm so deliberately separated from every "standard" tool.

Then we must have assume and offset in FASM and delete format and store and much more.

Also, we must delete support for $ as prefix for hex as well as 0x and 0X prefixes and keep h suffix only. Also, the flat design has to be replaced by mess-it-around design.

BTW:

1. NASM rejects not only $FFFF'FFFF but also $FFFFFFFF ... it requires $0FFFFFFFF

2. M.A.S.M. AFAIK rejects $0FFFFFFFF also ... only FFFFFFFFh is tolerable there Laughing

16 Feb 2009, 08:18

Goto page Previous 1, 2

< Last Thread | Next Thread >

Forum Rules:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum