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22 lines
383 B
Forth
22 lines
383 B
Forth
C" [DEFINED]" FIND NIP 0=
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[IF]
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: [DEFINED] ( -- f ) \ "name"
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NextWord SFIND IF DROP TRUE ELSE 2DROP FALSE THEN
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; IMMEDIATE
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: [UNDEFINED] ( -- f ) \ "name"
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POSTPONE [DEFINED] 0=
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; IMMEDIATE
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[THEN]
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: [IFDEF]
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POSTPONE [DEFINED]
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0= IF POSTPONE [ELSE] THEN
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; IMMEDIATE
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: [IFNDEF]
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POSTPONE [UNDEFINED]
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0= IF POSTPONE [ELSE] THEN
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; IMMEDIATE
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