Expansion of Macros with Parameters

TI-994A · **Joined:** Sat Feb 19, 2011 3:47 am **Posts:** 410

Hi guys. A simple question: how do such macros insert themselves into the actual code:

Code:

Macro doStuff(which)
  If which = 1
    ;do 1st routine
  ElseIf which = 2
    ;do 2nd routine
  ElseIf which = 3 
    ;do 3rd routine
  EndIf
EndMacro

doStuff(3)   ;calling 3rd routine

doStuff(2)   ;calling 2nd routine

Is it:

Code:

If which = 1
  ;do 1st routine
ElseIf which = 2
  ;do 2nd routine
ElseIf which = 3 
  ;do 3rd routine
EndIf

If which = 1
  ;do 1st routine
ElseIf which = 2
  ;do 2nd routine
ElseIf which = 3 
  ;do 3rd routine
EndIf

or:

Code:

;do 3rd routine

;do 2nd routine

Thanks.

xorc1zt · **Joined:** Sat Jul 09, 2011 7:57 am **Posts:** 276

doStuff(3) equal to

Quote:

If 3 = 1
;do 1st routine
ElseIf 3 = 2
;do 2nd routine
ElseIf 3 = 3
;do 3rd routine
EndIf

luis · **Posted:** Tue Mar 13, 2012 1:14 pm

If you want to check how a macro is expanded, just put some garbage at the end of the macro.

Code:

Macro doStuff(which)
  If which = 1
    ;do 1st routine
  ElseIf which = 2
    ;do 2nd routine
  ElseIf which = 3
    ;do 3rd routine
  EndIf 
  *
EndMacro

Then try to compile. In the macro error window you will see:

Code:

If 3 = 1
ElseIf 3 = 2
ElseIf 3 = 3
EndIf 
*   ;calling 3rd routine routine

Just remove the "*" to see how the macro has been expanded.

TI-994A · **Joined:** Sat Feb 19, 2011 3:47 am **Posts:** 410

xorc1zt wrote:

doStuff(3) equal to

Quote:

If 3 = 1
;do 1st routine
ElseIf 3 = 2
;do 2nd routine
ElseIf 3 = 3
;do 3rd routine
EndIf

Thanks for the clarification, xorc1zt.

And luis, thank you for pointing out the Macro Error window; you guys are right, and that confirms it.

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Expansion of Macros with Parameters

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