re PR libgcj/1758 (java.util package lacks TreeMap)
* java/util/TreeMap.java: New file. * java/util/TreeSet.java: New file. * Makefile.am: Add TreeMap and TreeSet. Enable WeakHashMap. * Makefile.in: Rebuilt. * java/util/HashSet.java (clone): Use constructor instead of calling clone on itself. * java/util/SortedSet.java: Sync with classpath. * java/util/HashMap.java (hash): Use if statement instead of ternary, for clarity. Resolves PR libgcj/1758. Resolves PR java/1684. From-SVN: r39657
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8 changed files with 1781 additions and 24 deletions
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@ -60,8 +60,8 @@ import java.io.ObjectOutputStream;
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* @author Jon Zeppieri
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* @author Jochen Hoenicke
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* @author Bryce McKinlay
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* @version $Revision: 1.3 $
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* @modified $Id: HashMap.java,v 1.3 2000/12/17 09:15:51 bryce Exp $
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* @version $Revision: 1.4 $
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* @modified $Id: HashMap.java,v 1.4 2000/12/21 02:00:15 bryce Exp $
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*/
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public class HashMap extends AbstractMap
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implements Map, Cloneable, Serializable
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@ -500,7 +500,10 @@ public class HashMap extends AbstractMap
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/** Return an index in the buckets array for `key' based on its hashCode() */
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private int hash(Object key)
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{
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return (key == null ? 0 : Math.abs(key.hashCode() % buckets.length));
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if (key == null)
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return 0;
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else
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return Math.abs(key.hashCode() % buckets.length);
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}
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/** Return an Entry who's key and value equal the supplied Map.Entry.
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@ -611,15 +614,13 @@ public class HashMap extends AbstractMap
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}
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/**
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* a class which implements the Iterator interface and is used for
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* iterating over HashMaps;
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* this implementation is parameterized to give a sequential view of
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* keys, values, or entries; it also allows the removal of elements,
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* as per the Javasoft spec.
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* Iterate over HashMap's entries.
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* This implementation is parameterized to give a sequential view of
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* keys, values, or entries.
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*
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* @author Jon Zeppieri
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* @version $Revision: 1.3 $
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* @modified $Id: HashMap.java,v 1.3 2000/12/17 09:15:51 bryce Exp $
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* @version $Revision: 1.4 $
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* @modified $Id: HashMap.java,v 1.4 2000/12/21 02:00:15 bryce Exp $
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*/
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class HashIterator implements Iterator
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{
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