43 lines
867 B
Forth
43 lines
867 B
Forth
\ Ęîíńňđóęöč˙ âűáîđŕ CASE
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\ ń ó÷ĺňîě âîçěîćíîé âëîćĺííîńňč îďĺđŕňîđîâ CASE
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DECIMAL
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VARIABLE CSP \ Óęŕçŕňĺëü ńňĺęŕ ęîíňđîë˙
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6 CONSTANT L-CAS# \ Äîďóńňčěűé óđîâĺíü âëîćĺííîńňč
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CREATE S-CSP L-CAS# CELLS ALLOT \ Ńňĺę ęîíňđîë˙
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S-CSP CSP !
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: +CSP ( -> P) \ Äîáŕâčňü óđîâĺíü
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CSP @ DUP CELL+ CSP !
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;
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: -CSP ( -> ) \ Óáđŕňü óđîâĺíü
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CSP @ 1 CELLS - CSP !
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;
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: !CSP ( -> ) \ Číčöčŕëčçčđîâŕňü óđîâĺíü
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SP@ +CSP !
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;
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: CSP@ ( -> A)
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CSP @ 1 CELLS - @
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;
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: ?CSP ( -> ) \ Ďđîâĺđčňü âűäĺđćŕííîńňü ńňĺęŕ
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\ SP@ CSP@ <> 37 ?ERROR ( ABORT" Ńáîé ńňĺęŕ ďî CSP !")
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-CSP
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;
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: CASE ( -> )
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!CSP
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; IMMEDIATE
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: OF
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POSTPONE OVER POSTPONE =
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[COMPILE] IF POSTPONE DROP
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; IMMEDIATE
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: ENDOF
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[COMPILE] ELSE
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; IMMEDIATE
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: ENDCASE
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POSTPONE DROP BEGIN SP@ CSP@ =
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0= WHILE [COMPILE] THEN REPEAT -CSP
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; IMMEDIATE
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