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Index > Macroinstructions > How to concatenate two lines with preprocessor?

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Z3N



Joined: 01 Oct 2009
Posts: 17
Z3N
Whether it is possible?

Example:
Code:
first equ 'head'
second equ 'body'

concatenate first,second

OUT:

first equ 'headbody'
    

"@concatenate"is invented macro.

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"There will be no more delay!" (Revelation 10)
Post 25 Mar 2010, 11:43
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid
AFAIK, FASM can't concatenate two string into single one (string handling is generally one of weak spots of FASM).
Post 25 Mar 2010, 12:24
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 17714
Location: In your JS exploiting you and your system
revolution
Code:
first equ 'head'
second equ 'body'

match xx yy,first second {first equ xx#yy}

display first

use64
mov rax,first    
Post 25 Mar 2010, 13:10
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid
oh... nevermind me reply then Smile
Post 25 Mar 2010, 13:16
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 17714
Location: In your JS exploiting you and your system
revolution
If you need it as a macro:
Code:
macro concatenate x,y{match xx yy,x y\{x equ xx\#yy\}}

first equ 'head'
second equ 'body'

concatenate first,second

display first

use64
mov rax,first    
Post 25 Mar 2010, 13:21
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Madis731



Joined: 25 Sep 2003
Posts: 2140
Location: Estonia
Madis731
But crossing a line isn't possible. For example:
<head>
<body>
...

here concat wouldn't work. The same problem is with multi-line comments.
Post 25 Mar 2010, 13:35
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Z3N



Joined: 01 Oct 2009
Posts: 17
Z3N
revolution wrote:
Code:
first equ 'head'
second equ 'body'

match xx yy,first second {first equ xx#yy}

display first

use64
mov rax,first    


Great! It's work!!!
Big thx!!!

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"There will be no more delay!" (Revelation 10)
Post 28 Mar 2010, 11:46
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Tyler



Joined: 19 Nov 2009
Posts: 1216
Location: NC, USA
Tyler
@vid: see http://flatassembler.net/docs.php?article=manual#2.3.3

Scroll until you get to
Code:
macro jif op1,cond,op2,label
     {
        cmp op1,op2
        j#cond label
     }
    

The paragraph below that explains the method revolution used(and a few others). I didn't know about it either Smile.
Post 28 Mar 2010, 12:14
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