Merged gcj-eclipse branch to trunk.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@120621 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 365 insertions, 0 deletions

diff --git a/libjava/classpath/java/util/EnumSet.java b/libjava/classpath/java/util/EnumSet.java
new file mode 100644
index 00000000000..44ae370ba0b
--- /dev/null
+++ b/libjava/classpath/java/util/EnumSet.java
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+/* EnumSet.java - Set of enum objects
+   Copyright (C) 2004, 2005 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package java.util;
+
+import java.io.Serializable;
+
+/**
+ * @author Tom Tromey (tromey@redhat.com)
+ * @author Andrew John Hughes (gnu_andrew@member.fsf.org)
+ * @since 1.5 
+ */
+
+// FIXME: serialization is special.
+public class EnumSet<T extends Enum<T>>
+  extends AbstractSet<T>
+  implements Cloneable, Serializable
+{
+  private static final long serialVersionUID = 4782406773684236311L;
+
+  BitSet store;
+  int cardinality;
+  Class<T> enumClass;
+
+  EnumSet()
+  {
+  }
+
+  public EnumSet<T> clone()
+  {
+    EnumSet<T> r;
+
+    try
+      {
+	r = (EnumSet<T>) super.clone();
+      }
+    catch (CloneNotSupportedException _)
+      {
+	/* Can't happen */
+	return null;
+      }
+    r.store = (BitSet) store.clone();
+    return r;
+  }
+
+  public int size()
+  {
+    return cardinality;
+  }
+
+  public Iterator<T> iterator()
+  {
+    return new Iterator<T>()
+    {
+      int next = -1;
+      int count = 0;
+
+      public boolean hasNext()
+      {
+	return count < cardinality;
+      }
+
+      public T next()
+      {
+	next = store.nextSetBit(next + 1);
+	++count;
+	return enumClass.getEnumConstants()[next];
+      }
+
+      public void remove()
+      {
+	if (! store.get(next))
+	  {
+	    store.clear(next);
+	    --cardinality;
+	  }
+      }
+    };
+  }
+
+  public boolean add(T val)
+  {
+    if (store.get(val.ordinal()))
+      return false;
+    store.set(val.ordinal());
+    ++cardinality;
+    return true;
+  }
+
+  public boolean addAll(Collection<? extends T> c)
+  {
+    boolean result = false;
+    if (c instanceof EnumSet)
+      {
+	EnumSet<T> other = (EnumSet<T>) c;
+	if (enumClass == other.enumClass)
+	  {
+	    store.or(other.store);
+	    int save = cardinality;
+	    cardinality = store.cardinality();
+	    result = save != cardinality;
+	  }
+      }
+    else
+      {
+	for (T val : c)
+	  {
+	    if (add (val))
+	      result = true;
+	  }
+      }
+    return result;
+  }
+
+  public void clear()
+  {
+    store.clear();
+    cardinality = 0;
+  }
+
+  public boolean contains(Object o)
+  {
+    if (! (o instanceof Enum))
+      return false;
+    Enum<T> e = (Enum<T>) o;
+    if (e.getDeclaringClass() != enumClass)
+      return false;
+    return store.get(e.ordinal());
+  }
+
+  public boolean containsAll(Collection<?> c)
+  {
+    if (c instanceof EnumSet)
+      {
+	EnumSet<T> other = (EnumSet<T>) c;
+	if (enumClass == other.enumClass)
+	  return store.containsAll(other.store);
+	return false;
+      }
+    return super.containsAll(c);
+  }
+
+  public boolean remove(Object o)
+  {
+    if (! (o instanceof Enum))
+      return false;
+    Enum<T> e = (Enum<T>) o;
+    if (e.getDeclaringClass() != enumClass)
+      return false;
+    store.clear(e.ordinal());
+    --cardinality;
+    return true;
+  }
+
+  public boolean removeAll(Collection<?> c)
+  {
+    if (c instanceof EnumSet)
+      {
+	EnumSet<T> other = (EnumSet<T>) c;
+	if (enumClass != other.enumClass)
+	  return false;
+	store.andNot(other.store);
+	int save = cardinality;
+	cardinality = store.cardinality();
+	return save != cardinality;
+      }
+    return super.removeAll(c);
+  }
+
+  public boolean retainAll(Collection<?> c)
+  {
+    if (c instanceof EnumSet)
+      {
+	EnumSet<T> other = (EnumSet<T>) c;
+	if (enumClass != other.enumClass)
+	  return false;
+	store.and(other.store);
+	int save = cardinality;
+	cardinality = store.cardinality();
+	return save != cardinality;
+      }
+    return super.retainAll(c);
+  }
+
+  public static <T extends Enum<T>> EnumSet<T> allOf(Class<T> eltType)
+  {
+    EnumSet<T> r = new EnumSet<T>();
+    r.store = new BitSet(eltType.getEnumConstants().length);
+    r.store.set(0, r.store.size());
+    r.cardinality = r.store.size();
+    r.enumClass = eltType;
+    return r;
+  }
+
+  public static <T extends Enum<T>> EnumSet<T> noneOf(Class<T> eltType)
+  {
+    EnumSet<T> r = new EnumSet<T>();
+    r.store = new BitSet(eltType.getEnumConstants().length);
+    r.enumClass = eltType;
+    return r;
+  }
+
+  public static <T extends Enum<T>> EnumSet<T> copyOf(EnumSet<T> other)
+  {
+    // We can't just use `other.clone' since we don't want to make a
+    // subclass.
+    EnumSet<T> r = new EnumSet<T>();
+    r.store = (BitSet) other.store.clone();
+    r.cardinality = other.cardinality;
+    r.enumClass = other.enumClass;
+    return r;
+  }
+
+  public static <T extends Enum<T>> EnumSet<T> copyOf(Collection<T> other)
+  {
+    if (other instanceof EnumSet)
+      return copyOf((EnumSet<T>) other);
+    EnumSet<T> r = new EnumSet<T>();
+    for (T val : other)
+      {
+	if (r.store == null)
+	  {
+	    r.enumClass = val.getDeclaringClass();
+	    r.store = new BitSet(r.enumClass.getEnumConstants().length);
+	  }
+	r.store.set(val.ordinal());
+      }
+    // The collection must contain at least one element.
+    if (r.store == null)
+      throw new IllegalArgumentException();
+    r.cardinality = r.store.cardinality();
+    return r;
+  }
+
+  public static <T extends Enum<T>> EnumSet<T> complementOf(EnumSet<T> other)
+  {
+    EnumSet<T> r = new EnumSet<T>();
+    r.store = (BitSet) other.store.clone();
+    r.store.flip(0, r.store.size());
+    r.cardinality = r.store.size() - other.cardinality;
+    r.enumClass = other.enumClass;
+    return r;
+  }
+
+  public static <T extends Enum<T>> EnumSet<T> of(T first)
+  {
+    EnumSet<T> r = new EnumSet<T>();
+    r.enumClass = first.getDeclaringClass();
+    r.store = new BitSet(r.enumClass.getEnumConstants().length);
+    r.store.set(first.ordinal());
+    r.cardinality = 1;
+    return r;
+  }
+
+  public static <T extends Enum<T>> EnumSet<T> of(T first, T second)
+  {
+    EnumSet<T> r = new EnumSet<T>();
+    r.enumClass = first.getDeclaringClass();
+    r.store = new BitSet(r.enumClass.getEnumConstants().length);
+    r.store.set(first.ordinal());
+    r.store.set(second.ordinal());
+    r.cardinality = r.store.cardinality();
+    return r;
+  }
+
+  public static <T extends Enum<T>> EnumSet<T> of(T first, T second, T third)
+  {
+    EnumSet<T> r = new EnumSet<T>();
+    r.enumClass = first.getDeclaringClass();
+    r.store = new BitSet(r.enumClass.getEnumConstants().length);
+    r.store.set(first.ordinal());
+    r.store.set(second.ordinal());
+    r.store.set(third.ordinal());
+    r.cardinality = r.store.cardinality();
+    return r;
+  }
+
+  public static <T extends Enum<T>> EnumSet<T> of(T first, T second, T third,
+						  T fourth)
+  {
+    EnumSet<T> r = new EnumSet<T>();
+    r.enumClass = first.getDeclaringClass();
+    r.store = new BitSet(r.enumClass.getEnumConstants().length);
+    r.store.set(first.ordinal());
+    r.store.set(second.ordinal());
+    r.store.set(third.ordinal());
+    r.store.set(fourth.ordinal());
+    r.cardinality = r.store.cardinality();
+    return r;
+  }
+
+  public static <T extends Enum<T>> EnumSet<T> of(T first, T second, T third,
+						  T fourth, T fifth)
+  {
+    EnumSet<T> r = new EnumSet<T>();
+    r.enumClass = first.getDeclaringClass();
+    r.store = new BitSet(r.enumClass.getEnumConstants().length);
+    r.store.set(first.ordinal());
+    r.store.set(second.ordinal());
+    r.store.set(third.ordinal());
+    r.store.set(fourth.ordinal());
+    r.store.set(fifth.ordinal());
+    r.cardinality = r.store.cardinality();
+    return r;
+  }
+
+  public static <T extends Enum<T>> EnumSet<T> of(T first, T... rest)
+  {
+    EnumSet<T> r = new EnumSet<T>();
+    r.enumClass = first.getDeclaringClass();
+    r.store = new BitSet(r.enumClass.getEnumConstants().length);
+    r.store.set(first.ordinal());
+    for (T val : rest)
+      r.store.set(val.ordinal());
+    r.cardinality = r.store.cardinality();
+    return r;
+  }
+
+  public static <T extends Enum<T>> EnumSet<T> range(T from, T to)
+  {
+    if (from.compareTo(to) > 0)
+      throw new IllegalArgumentException();
+    EnumSet<T> r = new EnumSet<T>();
+    r.store = new BitSet(from.getDeclaringClass().getEnumConstants().length);
+    r.store.set(from.ordinal(), to.ordinal() + 1);
+    r.enumClass = from.getDeclaringClass();
+    r.cardinality = to.ordinal() - from.ordinal() + 1;
+    return r;
+  }
+}