nested macro problem

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Ancient One

Joined: 28 Feb 2005
Posts: 55

Ancient One 04 Jun 2005, 04:18

While trying to implement a STRUCT macro set (for structure declaration), i need to write some code like below (just an example) :

Code:

macro A {
 if ~x eq
   dd x
 end if
}

macro B {
 struc C x, y \{
  A
 \}
}

(the x inside A is for representing the x that act as argument to C, and A is a dynamically defined macro). I need A to be expanded when B is called, i.e :

Code:

B

;becomes
;struc C x, y {
; if ~x eq
;  dd x
; end if
;}

;and not
;struc C x, y {
; A
;}

how do I achieve this?

my english isnt good. i hope i explained it corectly.

04 Jun 2005, 04:18

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8359
Location: Kraków, Poland

Tomasz Grysztar 04 Jun 2005, 07:57

During macro definition there are no directives interpreted and no macros expanded, so it means it's impossible to expand definition of one macro inside definition of another.

You can just do some passing of parameters from one macro to another to achieve required result:

Code:

macro A x {
 if ~x eq
   dd x
 end if
}

macro B {
 struc C x, y \{
  A x
 \}
}

04 Jun 2005, 07:57

Ancient One

Joined: 28 Feb 2005
Posts: 55

Ancient One 11 Jun 2005, 07:28

thanks privalov.. thats work.. now i need to review my macros on how to adapt this.

11 Jun 2005, 07:28

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