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source: branches/OKBJavaConnector/ECJClient/src/ec/app/edge/func/BLoop.java @ 10216

Last change on this file since 10216 was 6152, checked in by bfarka, 14 years ago

added ecj and custom statistics to communicate with the okb services #1441

File size: 2.4 KB
Line 
1/*
2  Copyright 2006 by Sean Luke
3  Licensed under the Academic Free License version 3.0
4  See the file "LICENSE" for more information
5*/
6
7
8package ec.app.edge.func;
9import ec.*;
10import ec.app.edge.*;
11import ec.gp.*;
12import ec.util.*;
13
14/*
15 * BLoop.java
16 *
17 * Created: Wed Nov  3 18:26:37 1999
18 * By: Sean Luke
19 */
20
21/**
22 * @author Sean Luke
23 * @version 1.0
24 */
25
26public class BLoop extends GPNode
27    {
28    public String toString() { return "loop2"; }
29
30    public void checkConstraints(final EvolutionState state,
31        final int tree,
32        final GPIndividual typicalIndividual,
33        final Parameter individualBase)
34        {
35        super.checkConstraints(state,tree,typicalIndividual,individualBase);
36        if (children.length!=2)
37            state.output.error("Incorrect number of children for node " +
38                toStringForError() + " at " +
39                individualBase);
40        }
41
42    public void eval(final EvolutionState state,
43        final int thread,
44        final GPData input,
45        final ADFStack stack,
46        final GPIndividual individual,
47        final Problem problem)
48        {
49        int edge = ((EdgeData)(input)).edge;
50        Edge prob = (Edge)problem;
51
52        if (prob.from.length==prob.numEdges)  // we're full, need to expand
53            {
54            int[] from_ = new int[prob.numEdges*2];
55            int[] to_ = new int[prob.numEdges*2];
56            int[] reading_ = new int[prob.numEdges*2];
57            System.arraycopy(prob.from,0,from_,0,prob.from.length);
58            System.arraycopy(prob.to,0,to_,0,prob.to.length);
59            System.arraycopy(prob.reading,0,reading_,0,prob.reading.length);
60            prob.from = from_;
61            prob.to = to_;
62            prob.reading = reading_;
63            }
64
65        int newedge = prob.numEdges;
66        prob.numEdges++;
67        prob.from[newedge] = prob.from[edge];
68        prob.to[newedge] = prob.from[edge];  // same
69        prob.reading[newedge] = prob.reading[edge];
70       
71        // pass the original edge down the left child
72
73        children[0].eval(state,thread,input,stack,individual,problem);
74
75        // reset input for right child
76        ((EdgeData)(input)).edge = newedge;
77
78        // pass the new edge down the right child
79       
80        children[1].eval(state,thread,input,stack,individual,problem);
81        }
82    }
83
84
85
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