Replace var in Sjasm macro

Question

I'm creating a Sjasm macro, so I can use:

L_E52A:
        ld hl, $58A0
        ld c, $12

        _do
                inc hl
                ld b, $1E

                _do 
                        ld (hl), a
                        inc hl
                _djnz
                inc hl
                dec c
        _while nz

        ret

I scratch this, but it doesn't work:

DLOOP_3 = 0
DLOOP_2 = 0
DLOOP_TOP = 0

    MACRO DLOOP_PUSH arg

DLOOP_3 = DLOOP_2
DLOOP_2 = DLOOP_TOP
DLOOP_TOP = arg
    ENDM

    MACRO DLOOP_POP

DLOOP_TOP = DLOOP_2
DLOOP_2 = DLOOP_3
DLOOP_3 =  0
    ENDM

    MACRO _do
        DLOOP_PUSH $
DLOOP_TOP:
    ENDM

    MACRO _while flag

        jr flag, DLOOP_TOP
        DLOOP_POP
    ENDM


    MACRO _djnz

        djnz DLOOP_TOP
        DLOOP_POP
    ENDM

The DLOOP_TOP isn't replaced with the actual value of DLOOP_TOP I'd like to have this working so I can see the asm a little bit mot like js

I'm a noob on Z80 asm.

Please help.

Answer 1

The assembler knows "reusable labels", see the documentation.

So you don't need the stack to organize your loop labels.

    MACRO _do
1
    ENDM

    MACRO _while flag
        jr flag, 1b
    ENDM

    MACRO _djnz
        djnz 1b
    ENDM

Answer 2

I notice that I dont need to create a label inside _do, i can just do :

DLOOP_5 = 0
DLOOP_4 = 0
DLOOP_3 = 0
DLOOP_2 = 0
DLOOP_TOP = 0

    MACRO DLOOP_PUSH arg
DLOOP_5 = DLOOP_4
DLOOP_4 = DLOOP_3
DLOOP_3 = DLOOP_2
DLOOP_2 = DLOOP_TOP
DLOOP_TOP = arg
    ENDM

    MACRO DLOOP_POP

DLOOP_TOP = DLOOP_2
DLOOP_2 = DLOOP_3
DLOOP_3 = DLOOP_4
DLOOP_4 = DLOOP_5
DLOOP_5 =  0

    ENDM

    MACRO _do
        DLOOP_PUSH $

    ENDM

    MACRO _while flag

        jr flag, DLOOP_TOP
        DLOOP_POP
    ENDM


    MACRO _djnz

        djnz DLOOP_TOP
        DLOOP_POP
    ENDM