Last change
on this file since bfa7bf0 was
7bef8cf,
checked in by Peter A. Buhr <pabuhr@…>, 16 months ago
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start paper on llheap
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Property mode set to
100644
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File size:
1014 bytes
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1 | BEGIN |
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2 | CLASS Fibonacci; |
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3 | HIDDEN fn, main; ! private members; |
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4 | BEGIN |
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5 | INTEGER fn; ! communication; |
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6 | |
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7 | PROCEDURE main; ! mimic uC++ coroutine main; |
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8 | BEGIN |
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9 | INTEGER fn1, fn2; |
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10 | |
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11 | fn := 0; fn1 := fn; |
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12 | Detach; ! suspend(); |
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13 | fn := 1; fn2 := fn1; fn1 := fn; |
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14 | Detach; ! suspend(); |
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15 | WHILE TRUE DO BEGIN |
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16 | fn := fn1 + fn2; fn2 := fn1; fn1 := fn; |
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17 | Detach; ! suspend(); |
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18 | END; |
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19 | END; |
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20 | |
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21 | INTEGER PROCEDURE next; |
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22 | BEGIN |
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23 | Call( THIS Fibonacci ); ! resume(); |
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24 | next := fn; |
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25 | END; |
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26 | ! Fibonacci constructor code; |
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27 | Detach; ! return to declaration; |
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28 | main; ! call main as last line of constructor; |
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29 | END Fibonacci; |
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30 | ! program main equivalent; |
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31 | REF(Fibonacci) f1, f2; ! objects are references; |
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32 | INTEGER i; |
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33 | |
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34 | f1 :- NEW Fibonacci; |
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35 | f2 :- NEW Fibonacci; |
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36 | FOR i := 1 STEP 1 UNTIL 10 DO BEGIN |
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37 | OutInt( f1.next, 3 ); |
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38 | OutText( " " ); |
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39 | OutInt( f2.next, 3 ); |
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40 | OutImage; |
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41 | END |
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42 | END; |
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43 | |
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44 | ! Local Variables: ; |
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45 | ! tab-width: 4 ; |
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46 | ! compile-command: "cim Fib.sim" ; |
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47 | ! End: ; |
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