File	Doc	Category	Size	Date	Package
MiniEnumSet.java	API Doc	Android 1.5 API	7263	Wed May 06 22:41:04 BST 2009	java.util

MiniEnumSet

• java.lang.Object
  • java.util.AbstractCollection
    • java.util.AbstractSet
      • java.util.EnumSet

Fields Summary
private static final int	MAX_ELEMENTS
private int	size
private final E[]	enums
private long	bits

Constructors Summary
MiniEnumSet(Class elementType, E[] enums) Constructs an instance. param elementType non-null; type of the elements param enums non-null; prepopulated array of constants in ordinal order // BEGIN android-changed super(elementType); this.enums = enums;

Methods Summary
public boolean	add(E element) if (!isValidType(element.getDeclaringClass())) { throw new ClassCastException(); } long mask = 1l << element.ordinal(); if ((bits & mask) == mask) { return false; } bits |= mask; size++; return true;
public boolean	addAll(java.util.Collection collection) if (0 == collection.size()) { return false; } if (collection instanceof EnumSet) { EnumSet<?> set = (EnumSet)collection; if (!isValidType(set.elementClass)) { throw new ClassCastException(); } MiniEnumSet<?> miniSet = (MiniEnumSet<?>) set; long oldBits = bits; bits |= miniSet.bits; size = Long.bitCount(bits); return (oldBits != bits); } return super.addAll(collection);
public void	clear() bits = 0; size = 0;
void	complement() if (0 != enums.length) { bits = ~bits; bits &= (-1l >>> (MAX_ELEMENTS - enums.length)); size = enums.length - size; }
public boolean	contains(java.lang.Object object) if (null == object) { return false; } if (!isValidType(object.getClass())) { return false; } Enum<?> element = (Enum<?>) object; int ordinal = element.ordinal(); return (bits & (1l << ordinal)) != 0;
public boolean	containsAll(java.util.Collection collection) if (collection.size() == 0) { return true; } if (collection instanceof MiniEnumSet) { MiniEnumSet<?> set = (MiniEnumSet<?>) collection; return isValidType(set.elementClass ) && ((bits & set.bits) == set.bits); } return !(collection instanceof EnumSet) && super.containsAll(collection);
public boolean	equals(java.lang.Object object) if (!(object instanceof EnumSet)) { return super.equals(object); } EnumSet<?> set =(EnumSet<?>)object; if( !isValidType(set.elementClass) ) { return size == 0 && set.size() == 0; } return bits == ((MiniEnumSet<?>)set).bits;
public java.util.Iterator	iterator() return new MiniEnumSetIterator();
public boolean	remove(java.lang.Object object) if (!contains(object)) { return false; } Enum<?> element = (Enum<?>) object; int ordinal = element.ordinal(); bits -= (1l << ordinal); size--; return true;
public boolean	removeAll(java.util.Collection collection) if (0 == collection.size()) { return false; } if (collection instanceof EnumSet) { EnumSet<E> set = (EnumSet<E>) collection; boolean removeSuccessful = false; if (isValidType(set.elementClass)) { long mask = bits & ((MiniEnumSet<E>) set).bits; if (mask != 0) { bits -= mask; size = Long.bitCount(bits); removeSuccessful = true; } } return removeSuccessful; } return super.removeAll(collection);
public boolean	retainAll(java.util.Collection collection) if (collection instanceof EnumSet) { EnumSet<E> set = (EnumSet<E>) collection; if (!isValidType(set.elementClass)) { clear(); return true; } boolean retainSuccessful = false; long oldBits = bits; bits &= ((MiniEnumSet<E>)set).bits; if (oldBits != bits) { size = Long.bitCount(bits); retainSuccessful = true; } return retainSuccessful; } return super.retainAll(collection);
void	setRange(E start, E end) int length = end.ordinal() - start.ordinal() + 1; long range = (-1l >>> (MAX_ELEMENTS - length)) << start.ordinal(); bits |= range; size = Long.bitCount(bits);
public int	size() return size;