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annotate src/luan/DeepCloner.java @ 126:0149bdf98fd8

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add ThreadLib git-svn-id: https://luan-java.googlecode.com/svn/trunk@127 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Fri, 06 Jun 2014 14:16:38 +0000
parents 7c08b611125d
children
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1 package luan;
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3 import java.util.Map;
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4 import java.util.IdentityHashMap;
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7 public final class DeepCloner {
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8 private final Map<Object,Object> cloned = new IdentityHashMap<Object,Object>();
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10 public <T extends DeepCloneable<T>> T deepClone(T obj) {
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11 @SuppressWarnings("unchecked")
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12 T rtn = (T)cloned.get(obj);
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13 if( rtn == null ) {
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14 rtn = obj.shallowClone();
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15 cloned.put(obj,rtn);
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16 obj.deepenClone(rtn,this);
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17 }
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18 return rtn;
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19 }
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21 public <T> T[] deepClone(T[] obj) {
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22 if( obj.length == 0 )
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23 return obj;
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24 @SuppressWarnings("unchecked")
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25 T[] rtn = (T[])cloned.get(obj);
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26 if( rtn == null ) {
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27 rtn = obj.clone();
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28 cloned.put(obj,rtn);
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29 for( int i=0; i<rtn.length; i++ ) {
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30 @SuppressWarnings("unchecked")
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31 T t = get(rtn[i]);
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32 rtn[i] = t;
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33 }
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34 }
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35 return rtn;
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36 }
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38 public <T> T get(T obj) {
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39 if( !(obj instanceof DeepCloneable) )
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40 return obj;
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41 @SuppressWarnings("unchecked")
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42 T dc = (T)deepClone((DeepCloneable)obj);
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43 return dc;
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44 }
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45 }