[6152] | 1 | /*
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| 2 | Copyright 2006 by Sean Luke
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| 3 | Licensed under the Academic Free License version 3.0
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| 4 | See the file "LICENSE" for more information
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| 5 | */
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| 6 |
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| 7 |
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| 8 | package ec.app.multiplexerslow.func;
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| 9 | import ec.*;
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| 10 | import ec.app.multiplexerslow.*;
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| 11 | import ec.gp.*;
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| 12 | import ec.util.*;
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| 13 |
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| 14 | /*
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| 15 | * And.java
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| 16 | *
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| 17 | * Created: Wed Nov 3 18:26:37 1999
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| 18 | * By: Sean Luke
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| 19 | */
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| 20 |
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| 21 | /**
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| 22 | * @author Sean Luke
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| 23 | * @version 1.0
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| 24 | */
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| 25 |
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| 26 | public class And extends GPNode
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| 27 | {
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| 28 | public String toString() { return "and"; }
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| 29 |
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| 30 | public void checkConstraints(final EvolutionState state,
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| 31 | final int tree,
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| 32 | final GPIndividual typicalIndividual,
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| 33 | final Parameter individualBase)
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| 34 | {
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| 35 | super.checkConstraints(state,tree,typicalIndividual,individualBase);
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| 36 | if (children.length!=2)
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| 37 | state.output.error("Incorrect number of children for node " +
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| 38 | toStringForError() + " at " +
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| 39 | individualBase);
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| 40 | }
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| 41 |
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| 42 | public void eval(final EvolutionState state,
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| 43 | final int thread,
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| 44 | final GPData input,
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| 45 | final ADFStack stack,
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| 46 | final GPIndividual individual,
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| 47 | final Problem problem)
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| 48 | {
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| 49 | // shortcutting AND
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| 50 | children[0].eval(state,thread,input,stack,individual,problem);
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| 51 |
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| 52 | if (((MultiplexerData)input).x == 1 ) // return the second item
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| 53 | children[1].eval(state,thread,input,stack,individual,problem);
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| 54 | // else return the first item (already there)
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| 55 | }
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| 56 | }
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| 57 |
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| 58 |
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| 59 |
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