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OUTPUT "dir_elseif.bin"
;; no nested blocks, just regular IF/ELSEIF/ELSEIF/ELSE/ENDIF chain
IF 1
ld b,c ; 'A'
ELSEIF 1
false ; false because other block was active (true)
ELSEIF 1
false ; false because other block was active (true)
ELSE
false ; false because other block was active (true)
ENDIF
IF 0
false
ELSEIF 1
ld b,d ; 'B'
ELSEIF 1
false ; false because other block was active (true)
ELSE
false
ENDIF
IF 0
false
ELSEIF 0
false
ELSEIF 1
ld b,e ; 'C'
ELSE
false
ENDIF
IF 0
false
ELSEIF 0
false
ELSEIF 0
false
ELSE
ld b,h ; 'D'
ENDIF
;; nested blocks
; first block active ('a')
IF 1
ld h,c ; 'a'
IF 1
ld b,c ; 'A'
ELSEIF 1
false ; false because other block was active (true)
ELSEIF 1
false ; false because other block was active (true)
ELSE
false ; false because other block was active (true)
ENDIF
IF 0
false
ELSEIF 1
ld b,d ; 'B'
ELSEIF 1
false ; false because other block was active (true)
ELSE
false
ENDIF
IF 0
false
ELSEIF 0
false
ELSEIF 1
ld b,e ; 'C'
ELSE
false
ENDIF
IF 0
false
ELSEIF 0
false
ELSEIF 0
false
ELSE
ld b,h ; 'D'
ENDIF
ELSEIF 1
false ; false because other block was active (true)
IF 1
false
ELSEIF 1
false
ELSEIF 1
false
ELSE
false
ENDIF
ELSEIF 1
false ; false because other block was active (true)
IF 1
false
ELSEIF 1
false
ELSEIF 1
false
ELSE
false
ENDIF
ELSE
false ; false because other block was active (true)
IF 1
false
ELSEIF 1
false
ELSEIF 1
false
ELSE
false
ENDIF
ENDIF
; second block active ('b')
IF 0
false
IF 1
false
ELSEIF 1
false
ELSEIF 1
false
ELSE
false
ENDIF
ELSEIF 1
ld h,d ; 'b'
IF 1
ld b,c ; 'A'
ELSEIF 1
false ; false because other block was active (true)
ELSEIF 1
false ; false because other block was active (true)
ELSE
false ; false because other block was active (true)
ENDIF
IF 0
false
ELSEIF 1
ld b,d ; 'B'
ELSEIF 1
false ; false because other block was active (true)
ELSE
false
ENDIF
IF 0
false
ELSEIF 0
false
ELSEIF 1
ld b,e ; 'C'
ELSE
false
ENDIF
IF 0
false
ELSEIF 0
false
ELSEIF 0
false
ELSE
ld b,h ; 'D'
ENDIF
ELSEIF 1
false ; false because other block was active (true)
IF 1
false
ELSEIF 1
false
ELSEIF 1
false
ELSE
false
ENDIF
ELSE
false ; false because other block was active (true)
IF 1
false
ELSEIF 1
false
ELSEIF 1
false
ELSE
false
ENDIF
ENDIF
; third block active ('c')
IF 0
false
IF 1
false
ELSEIF 1
false
ELSEIF 1
false
ELSE
false
ENDIF
ELSEIF 0
false
IF 1
false
ELSEIF 1
false
ELSEIF 1
false
ELSE
false
ENDIF
ELSEIF 1
ld h,e ; 'c'
IF 1
ld b,c ; 'A'
ELSEIF 1
false ; false because other block was active (true)
ELSEIF 1
false ; false because other block was active (true)
ELSE
false ; false because other block was active (true)
ENDIF
IF 0
false
ELSEIF 1
ld b,d ; 'B'
ELSEIF 1
false ; false because other block was active (true)
ELSE
false
ENDIF
IF 0
false
ELSEIF 0
false
ELSEIF 1
ld b,e ; 'C'
ELSE
false
ENDIF
IF 0
false
ELSEIF 0
false
ELSEIF 0
false
ELSE
ld b,h ; 'D'
ENDIF
ELSE
false ; false because other block was active (true)
IF 1
false
ELSEIF 1
false
ELSEIF 1
false
ELSE
false
ENDIF
ENDIF
; fourth block active ('d')
IF 0
false
IF 1
false
ELSEIF 1
false
ELSEIF 1
false
ELSE
false
ENDIF
ELSEIF 0
false
IF 1
false
ELSEIF 1
false
ELSEIF 1
false
ELSE
false
ENDIF
ELSEIF 0
false
IF 1
false
ELSEIF 1
false
ELSEIF 1
false
ELSE
false
ENDIF
ELSE
ld h,h ; 'd'
IF 1
ld b,c ; 'A'
ELSEIF 1
false ; false because other block was active (true)
ELSEIF 1
false ; false because other block was active (true)
ELSE
false ; false because other block was active (true)
ENDIF
IF 0
false
ELSEIF 1
ld b,d ; 'B'
ELSEIF 1
false ; false because other block was active (true)
ELSE
false
ENDIF
IF 0
false
ELSEIF 0
false
ELSEIF 1
ld b,e ; 'C'
ELSE
false
ENDIF
IF 0
false
ELSEIF 0
false
ELSEIF 0
false
ELSE
ld b,h ; 'D'
ENDIF
ENDIF
ASSERT 24 == $ ; expected output: "ABCDaABCDbABCDcABCDdABCD"
;; verify that ELSEIF expression is not evaluated when active block already happened
IF 1
ELSEIF @ ; would emit syntax error if evaluated
ELSE
ENDIF
IF 0
ELSEIF 1
ELSEIF @ ; would emit syntax error if evaluated
ELSE
ENDIF