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1561
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1 package luan;
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2
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3 import java.util.Map;
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4 import java.util.Set;
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5 import java.util.Collection;
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6 import java.util.Collections;
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7 import java.util.IdentityHashMap;
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8
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9
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10 public final class LuanImmutabler {
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11 private final Set handled = Collections.newSetFromMap(new IdentityHashMap());
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12 private Luan luan = null;
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13
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14 public void makeImmutable(LuanCloneable obj) throws LuanException {
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15 if( obj==null || !handled.add(obj) )
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16 return;
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17 if( obj instanceof Luan ) {
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18 if( luan != null )
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19 throw new RuntimeException("2 luans in "+this+" - "+luan+" "+obj);
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20 luan = (Luan)obj;
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21 }
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22 obj.makeImmutable(this);
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23 }
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24
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25 public void makeImmutable(Object[] obj) throws LuanException {
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26 if( obj==null || !handled.add(obj) )
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27 return;
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28 for( Object entry : obj ) {
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29 makeImmutable(entry);
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30 }
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31 }
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32
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33 public void makeImmutable(Map obj) throws LuanException {
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34 if( obj==null || !handled.add(obj) )
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35 return;
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36 for( Object stupid : obj.entrySet() ) {
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37 Map.Entry entry = (Map.Entry)stupid;
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38 makeImmutable(entry.getKey());
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39 makeImmutable(entry.getValue());
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40 }
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41 }
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42
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43 public void makeImmutable(Collection obj) throws LuanException {
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44 if( obj==null || !handled.add(obj) )
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45 return;
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46 for( Object entry : (Collection)obj ) {
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47 makeImmutable(entry);
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48 }
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49 }
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50
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51 public void makeImmutable(Object obj) throws LuanException {
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52 if( obj instanceof LuanCloneable )
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53 makeImmutable((LuanCloneable)obj);
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54 else if( obj instanceof Object[] )
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55 makeImmutable((Object[])obj);
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56 else if( obj instanceof Map )
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57 makeImmutable((Map)obj);
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58 else if( obj instanceof Collection )
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59 makeImmutable((Collection)obj);
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60 }
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61 }
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