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Vector.java (ensureCapacity): Don't increment modCount.

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2000-11-27  Bryce McKinlay  <bryce@albatross.co.nz>

	* java/util/Vector.java (ensureCapacity): Don't increment modCount.
	(addElement): Don't increment elementCount twice. Doh.
	* java/util/ArrayList.java (add): Only call ensureCapacity if the
	array needs to be expanded.
	(addAll): Ditto.
	* java/util/Collections.java (UnmodifiableCollection): Implement
	toString().
	(UnmodifiableList): Throw UnsupportedOperationException from
	modification methods. Set `l' from the one-parameter constructor.
	(UnmodifiableMap): Implement toString().
	(SynchronizedCollection): Ditto.
	(SynchronizedList): Set `l' from the one-parameter constructor.
	(SynchronizedSortedSet): Set `ss' from the one-parameter constructor.
	(SynchronizedMap): Implement toString().

From-SVN: r37785
This commit is contained in:
Bryce McKinlay 2000-11-27 08:30:26 +00:00 • committed by Bryce McKinlay
parent 27e2564ac8
commit f24dbacf85
4 changed files with 55 additions and 39 deletions
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63
libjava/java/util/Collections.java
View file

@ -43,7 +43,6 @@ import java.io.Serializable;
*/
public class Collections
{
/**
* This class is non-instantiable.
*/
@ -58,7 +57,6 @@ public class Collections
*/
public static final Set EMPTY_SET = new AbstractSet()
{
public int size()
{
return 0;
@ -97,7 +95,6 @@ public class Collections
*/
public static final List EMPTY_LIST = new AbstractList()
{
public int size()
{
return 0;
@ -116,7 +113,6 @@ public class Collections
*/
public static final Map EMPTY_MAP = new AbstractMap()
{
public Set entrySet()
{
return EMPTY_SET;
@ -147,7 +143,6 @@ public class Collections
*/
private static int search(List l, Object key, final Comparator c)
{
int pos = 0;
// We use a linear search using an iterator if we can guess that the list
@ -437,7 +432,6 @@ public class Collections
// stated - I just would be amazed if it isn't...
public static List nCopies(final int n, final Object o)
{
// Check for insane arguments
if (n < 0)
{
@ -552,7 +546,6 @@ public class Collections
// Iterate backwards over l
while (i.hasPrevious())
{
// Obtain a random position to swap with. nextIndex is used so that the
// range of the random number includes the current position.
int swap = r.nextInt(i.nextIndex());
@ -579,10 +572,8 @@ public class Collections
// It's not serializable because the spec is broken.
public static Set singleton(final Object o)
{
return new AbstractSet()
{
public int size()
{
return 1;
@ -592,7 +583,6 @@ public class Collections
{
return new Iterator()
{
private boolean hasNext = true;
public boolean hasNext()
@ -632,10 +622,8 @@ public class Collections
// It's not serializable because the spec is broken.
public static List singletonList(final Object o)
{
return new AbstractList()
{
public int size()
{
return 1;
@ -666,7 +654,6 @@ public class Collections
// It's not serializable because the spec is broken.
public static Map singletonMap(final Object key, final Object value)
{
return new AbstractMap()
{
public Set entrySet()
@ -811,7 +798,6 @@ public class Collections
private static class UnmodifiableListIterator extends UnmodifiableIterator
implements ListIterator
{
// This is stored both here and in the superclass, to avoid excessive
// casting.
private ListIterator li;
@ -910,12 +896,15 @@ public class Collections
{
return c.toArray(a);
}
public String toString()
{
return c.toString();
}
}
private static class UnmodifiableList extends UnmodifiableCollection
implements List
{
// This is stored both here and in the superclass, to avoid excessive
// casting.
List l;
@ -928,11 +917,11 @@ public class Collections
public void add(int index, Object o)
{
l.add(index, o);
throw new UnsupportedOperationException();
}
public boolean addAll(int index, Collection c)
{
return l.addAll(index, c);
throw new UnsupportedOperationException();
}
public boolean equals(Object o)
{
@ -964,15 +953,11 @@ public class Collections
}
public Object remove(int index)
{
return l.remove(index);
}
public boolean remove(Object o)
{
return l.remove(o);
throw new UnsupportedOperationException();
}
public Object set(int index, Object o)
{
return l.set(index, o);
throw new UnsupportedOperationException();
}
public List subList(int fromIndex, int toIndex)
{
@ -1000,7 +985,6 @@ public class Collections
private static class UnmodifiableSortedSet extends UnmodifiableSet
implements SortedSet
{
// This is stored both here and in the superclass, to avoid excessive
// casting.
private SortedSet ss;
@ -1039,7 +1023,6 @@ public class Collections
private static class UnmodifiableMap implements Map, Serializable
{
Map m;
public UnmodifiableMap(Map m)
@ -1143,12 +1126,15 @@ public class Collections
{
return new UnmodifiableCollection(m.values());
}
public String toString()
{
return m.toString();
}
}
private static class UnmodifiableSortedMap extends UnmodifiableMap
implements SortedMap
{
// This is stored both here and in the superclass, to avoid excessive
// casting.
private SortedMap sm;
@ -1226,7 +1212,6 @@ public class Collections
private static class SynchronizedListIterator extends SynchronizedIterator
implements ListIterator
{
// This is stored both here and in the superclass, to avoid excessive
// casting.
private ListIterator li;
@ -1389,12 +1374,18 @@ public class Collections
return c.toArray(a);
}
}
public String toString()
{
synchronized(sync)
{
return c.toString();
}
}
}
private static class SynchronizedList extends SynchronizedCollection
implements List
{
// This is stored both here and in the superclass, to avoid excessive
// casting.
List l;
@ -1407,6 +1398,7 @@ public class Collections
public SynchronizedList(List l)
{
super(l);
this.l = l;
}
public void add(int index, Object o)
@ -1505,7 +1497,6 @@ public class Collections
private static class SynchronizedSet extends SynchronizedCollection
implements Set
{
public SynchronizedSet(Object sync, Set s)
{
super(sync, s);
@ -1534,7 +1525,6 @@ public class Collections
private static class SynchronizedSortedSet extends SynchronizedSet
implements SortedSet
{
// This is stored both here and in the superclass, to avoid excessive
// casting.
private SortedSet ss;
@ -1547,6 +1537,7 @@ public class Collections
public SynchronizedSortedSet(SortedSet ss)
{
super(ss);
this.ss = ss;
}
public Comparator comparator()
@ -1596,7 +1587,6 @@ public class Collections
private static class SynchronizedMap implements Map, Serializable
{
Object sync;
Map m;
@ -1634,7 +1624,7 @@ public class Collections
}
// This is one of the ickiest cases of nesting I've ever seen. It just
// means "return an SynchronizedSet, except that the iterator() method
// means "return a SynchronizedSet, except that the iterator() method
// returns an SynchronizedIterator whos next() method returns a
// synchronized wrapper around its normal return value".
public Set entrySet()
@ -1772,12 +1762,18 @@ public class Collections
return new SynchronizedCollection(sync, m.values());
}
}
public String toString()
{
synchronized(sync)
{
return m.toString();
}
}
}
private static class SynchronizedSortedMap extends SynchronizedMap
implements SortedMap
{
// This is stored both here and in the superclass, to avoid excessive
// casting.
private SortedMap sm;
@ -1790,6 +1786,7 @@ public class Collections
public SynchronizedSortedMap(SortedMap sm)
{
super(sm);
this.sm = sm;
}
public Comparator comparator()