693 lines
23 KiB
Plaintext
693 lines
23 KiB
Plaintext
package speiger.src.collections.PACKAGE.sets;
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#if TYPE_OBJECT
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import java.util.Comparator;
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#endif
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import java.util.Collection;
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import java.util.Iterator;
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import java.util.NoSuchElementException;
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import speiger.src.collections.PACKAGE.collections.COLLECTION;
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#if !TYPE_OBJECT
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import speiger.src.collections.PACKAGE.collections.ITERATOR;
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#endif
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import speiger.src.collections.PACKAGE.collections.BI_ITERATOR;
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#if !TYPE_OBJECT
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import speiger.src.collections.PACKAGE.functions.COMPARATOR;
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#endif
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import speiger.src.collections.PACKAGE.lists.LIST_ITERATOR;
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#if !TYPE_OBJECT
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import speiger.src.collections.PACKAGE.utils.ITERATORS;
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#endif
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import speiger.src.collections.PACKAGE.utils.STRATEGY;
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import speiger.src.collections.utils.HashUtil;
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import speiger.src.collections.utils.SanityChecks;
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/**
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* A Type Specific LinkedHashSet that allows for custom HashControl. That uses arrays to create links between nodes.
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* For cases where Objects/primitive do not allow hashcoding this can be really useful and provide a lot of control.
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* This implementation of SortedSet does not support SubSet of any kind. It implements the interface due to sortability and first/last access
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* @Type(T)
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*/
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public class LINKED_CUSTOM_HASH_SET KEY_GENERIC_TYPE extends CUSTOM_HASH_SET KEY_GENERIC_TYPE implements SORTED_SET KEY_GENERIC_TYPE
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{
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/** The Backing array for links between nodes. Left 32 Bits => Previous Entry, Right 32 Bits => Next Entry */
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protected transient long[] links;
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/** The First Index in the Map */
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protected int firstIndex = -1;
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/** The Last Index in the Map */
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protected int lastIndex = -1;
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/**
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* Default Contstructor
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* @param strategy the strategy that allows hash control.
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* @throws NullPointerException if Strategy is null
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*/
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public LINKED_CUSTOM_HASH_SET(STRATEGY KEY_SUPER_GENERIC_TYPE strategy) {
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this(HashUtil.DEFAULT_MIN_CAPACITY, HashUtil.DEFAULT_LOAD_FACTOR, strategy);
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}
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/**
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* Constructor that defines the minimum capacity
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* @param minCapacity the minimum capacity the HashSet is allowed to be.
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* @param strategy the strategy that allows hash control.
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* @throws NullPointerException if Strategy is null
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* @throws IllegalStateException if the minimum capacity is negative
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*/
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public LINKED_CUSTOM_HASH_SET(int minCapacity, STRATEGY KEY_SUPER_GENERIC_TYPE strategy) {
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this(minCapacity, HashUtil.DEFAULT_LOAD_FACTOR, strategy);
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}
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/**
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* Constructor that defines the minimum capacity and load factor
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* @param minCapacity the minimum capacity the HashSet is allowed to be.
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* @param loadFactor the percentage of how full the backing array can be before they resize
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* @param strategy the strategy that allows hash control.
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* @throws NullPointerException if Strategy is null
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* @throws IllegalStateException if the minimum capacity is negative
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* @throws IllegalStateException if the loadfactor is either below/equal to 0 or above/equal to 1
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*/
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public LINKED_CUSTOM_HASH_SET(int minCapacity, float loadFactor, STRATEGY KEY_SUPER_GENERIC_TYPE strategy) {
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super(minCapacity, loadFactor, strategy);
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links = new long[nullIndex + 1];
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}
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/**
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* Helper constructor that allow to create a set from unboxed values
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* @param array the elements that should be put into the set
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* @param strategy the strategy that allows hash control.
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* @throws NullPointerException if Strategy is null
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*/
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public LINKED_CUSTOM_HASH_SET(KEY_TYPE[] array, STRATEGY KEY_SUPER_GENERIC_TYPE strategy) {
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this(array, 0, array.length, HashUtil.DEFAULT_LOAD_FACTOR, strategy);
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}
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/**
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* Helper constructor that allow to create a set from unboxed values
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* @param array the elements that should be put into the set
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* @param loadFactor the percentage of how full the backing array can be before they resize
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* @param strategy the strategy that allows hash control.
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* @throws NullPointerException if Strategy is null
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* @throws IllegalStateException if the loadfactor is either below/equal to 0 or above/equal to 1
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*/
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public LINKED_CUSTOM_HASH_SET(KEY_TYPE[] array, float loadFactor, STRATEGY KEY_SUPER_GENERIC_TYPE strategy) {
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this(array, 0, array.length, loadFactor, strategy);
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}
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/**
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* Helper constructor that allow to create a set from unboxed values
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* @param array the elements that should be put into the set
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* @param offset the starting index within the array that should be used
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* @param length the amount of elements used from the array
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* @param strategy the strategy that allows hash control.
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* @throws NullPointerException if Strategy is null
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* @throws IllegalStateException if offset and length causes to step outside of the arrays range
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*/
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public LINKED_CUSTOM_HASH_SET(KEY_TYPE[] array, int offset, int length, STRATEGY KEY_SUPER_GENERIC_TYPE strategy) {
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this(array, offset, length, HashUtil.DEFAULT_LOAD_FACTOR, strategy);
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}
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/**
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* Helper constructor that allow to create a set from unboxed values
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* @param array the elements that should be put into the set
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* @param offset the starting index within the array that should be used
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* @param length the amount of elements used from the array
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* @param loadFactor the percentage of how full the backing array can be before they resize
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* @param strategy the strategy that allows hash control.
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* @throws NullPointerException if Strategy is null
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* @throws IllegalStateException if the loadfactor is either below/equal to 0 or above/equal to 1
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* @throws IllegalStateException if offset and length causes to step outside of the arrays range
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*/
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public LINKED_CUSTOM_HASH_SET(KEY_TYPE[] array, int offset, int length, float loadFactor, STRATEGY KEY_SUPER_GENERIC_TYPE strategy) {
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this(length < 0 ? 0 : length, strategy);
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SanityChecks.checkArrayCapacity(array.length, offset, length);
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for(int i = 0;i<length;i++) add(array[offset+i]);
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}
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/**
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* A Helper constructor that allows to create a Set with exactly the same values as the provided collection.
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* @param collection the set the elements should be added to the Set
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* @param strategy the strategy that allows hash control.
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* @throws NullPointerException if Strategy is null
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*/
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@Deprecated
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public LINKED_CUSTOM_HASH_SET(Collection<? extends CLASS_TYPE> collection, STRATEGY KEY_SUPER_GENERIC_TYPE strategy) {
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this(collection, HashUtil.DEFAULT_LOAD_FACTOR, strategy);
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}
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/**
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* A Helper constructor that allows to create a Set with exactly the same values as the provided collection.
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* @param collection the set the elements should be added to the Set
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* @param loadFactor the percentage of how full the backing array can be before they resize
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* @param strategy the strategy that allows hash control.
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* @throws NullPointerException if Strategy is null
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* @throws IllegalStateException if the loadfactor is either below/equal to 0 or above/equal to 1
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*/
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@Deprecated
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public LINKED_CUSTOM_HASH_SET(Collection<? extends CLASS_TYPE> collection, float loadFactor, STRATEGY KEY_SUPER_GENERIC_TYPE strategy) {
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this(collection.size(), loadFactor, strategy);
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addAll(collection);
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}
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/**
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* A Helper constructor that allows to create a Set with exactly the same values as the provided collection.
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* @param collection the set the elements should be added to the Set
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* @param strategy the strategy that allows hash control.
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* @throws NullPointerException if Strategy is null
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*/
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public LINKED_CUSTOM_HASH_SET(COLLECTION KEY_GENERIC_TYPE collection, STRATEGY KEY_SUPER_GENERIC_TYPE strategy) {
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this(collection, HashUtil.DEFAULT_LOAD_FACTOR, strategy);
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}
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/**
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* A Helper constructor that allows to create a Set with exactly the same values as the provided collection.
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* @param collection the set the elements should be added to the Set
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* @param loadFactor the percentage of how full the backing array can be before they resize
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* @param strategy the strategy that allows hash control.
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* @throws NullPointerException if Strategy is null
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* @throws IllegalStateException if the loadfactor is either below/equal to 0 or above/equal to 1
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*/
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public LINKED_CUSTOM_HASH_SET(COLLECTION KEY_GENERIC_TYPE collection, float loadFactor, STRATEGY KEY_SUPER_GENERIC_TYPE strategy) {
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this(collection.size(), strategy);
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addAll(collection);
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}
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/**
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* A Helper constructor that allows to create a set from a iterator of an unknown size
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* @param iterator the elements that should be added to the set
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* @param strategy the strategy that allows hash control.
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* @throws NullPointerException if Strategy is null
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*/
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public LINKED_CUSTOM_HASH_SET(Iterator<CLASS_TYPE> iterator, STRATEGY KEY_SUPER_GENERIC_TYPE strategy) {
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this(iterator, HashUtil.DEFAULT_LOAD_FACTOR, strategy);
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}
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/**
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* A Helper constructor that allows to create a set from a iterator of an unknown size
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* @param iterator the elements that should be added to the set
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* @param loadFactor the percentage of how full the backing array can be before they resize
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* @param strategy the strategy that allows hash control.
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* @throws NullPointerException if Strategy is null
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* @throws IllegalStateException if the loadfactor is either below/equal to 0 or above/equal to 1
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*/
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public LINKED_CUSTOM_HASH_SET(Iterator<CLASS_TYPE> iterator, float loadFactor, STRATEGY KEY_SUPER_GENERIC_TYPE strategy) {
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#if !TYPE_OBJECT
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this(ITERATORS.wrap(iterator), loadFactor, strategy);
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#else
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this(HashUtil.DEFAULT_MIN_CAPACITY, loadFactor, strategy);
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while(iterator.hasNext()) add(iterator.next());
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#endif
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}
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#if !TYPE_OBJECT
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/**
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* A Helper constructor that allows to create a set from a iterator of an unknown size
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* @param iterator the elements that should be added to the set
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* @param strategy the strategy that allows hash control.
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* @throws NullPointerException if Strategy is null
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*/
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public LINKED_CUSTOM_HASH_SET(ITERATOR KEY_GENERIC_TYPE iterator, STRATEGY KEY_SUPER_GENERIC_TYPE strategy) {
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this(iterator, HashUtil.DEFAULT_LOAD_FACTOR, strategy);
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}
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/**
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* A Helper constructor that allows to create a set from a iterator of an unknown size
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* @param iterator the elements that should be added to the set
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* @param loadFactor the percentage of how full the backing array can be before they resize
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* @param strategy the strategy that allows hash control.
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* @throws NullPointerException if Strategy is null
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* @throws IllegalStateException if the loadfactor is either below/equal to 0 or above/equal to 1
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*/
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public LINKED_CUSTOM_HASH_SET(ITERATOR KEY_GENERIC_TYPE iterator, float loadFactor, STRATEGY KEY_SUPER_GENERIC_TYPE strategy) {
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this(HashUtil.DEFAULT_MIN_CAPACITY, loadFactor, strategy);
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while(iterator.hasNext()) add(iterator.NEXT());
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}
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#endif
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@Override
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public boolean addAndMoveToFirst(KEY_TYPE o) {
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if(strategy.equals(o, EMPTY_KEY_VALUE)) {
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if(containsNull) {
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moveToFirstIndex(nullIndex);
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return false;
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}
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containsNull = true;
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onNodeAdded(nullIndex);
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}
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else {
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int pos = HashUtil.mix(strategy.hashCode(o)) & mask;
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while(!strategy.equals(keys[pos], EMPTY_KEY_VALUE)) {
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if(strategy.equals(keys[pos], o)) {
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moveToFirstIndex(pos);
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return false;
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}
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pos = ++pos & mask;
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}
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keys[pos] = o;
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onNodeAdded(pos);
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}
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if(size++ >= maxFill) rehash(HashUtil.arraySize(size+1, loadFactor));
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return true;
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}
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@Override
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public boolean addAndMoveToLast(KEY_TYPE o) {
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if(strategy.equals(o, EMPTY_KEY_VALUE)) {
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if(containsNull) {
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moveToLastIndex(nullIndex);
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return false;
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}
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containsNull = true;
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onNodeAdded(nullIndex);
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}
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else {
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int pos = HashUtil.mix(strategy.hashCode(o)) & mask;
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while(!strategy.equals(keys[pos], EMPTY_KEY_VALUE)) {
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if(strategy.equals(keys[pos], o)) {
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moveToLastIndex(pos);
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return false;
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}
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pos = ++pos & mask;
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}
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keys[pos] = o;
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onNodeAdded(pos);
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}
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if(size++ >= maxFill) rehash(HashUtil.arraySize(size+1, loadFactor));
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return true;
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}
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@Override
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public boolean moveToFirst(KEY_TYPE o) {
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if(strategy.equals(FIRST_KEY(), o)) return false;
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if(strategy.equals(o, EMPTY_KEY_VALUE)) {
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if(containsNull) {
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moveToFirstIndex(nullIndex);
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return true;
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}
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}
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else {
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int pos = HashUtil.mix(strategy.hashCode(o)) & mask;
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while(!strategy.equals(keys[pos], EMPTY_KEY_VALUE)) {
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if(strategy.equals(keys[pos], o)) {
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moveToFirstIndex(pos);
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return true;
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}
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pos = ++pos & mask;
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}
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}
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return false;
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}
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@Override
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public boolean moveToLast(KEY_TYPE o) {
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if(strategy.equals(LAST_KEY(), o)) return false;
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if(strategy.equals(o, EMPTY_KEY_VALUE)) {
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if(containsNull) {
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moveToLastIndex(nullIndex);
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return true;
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}
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}
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else {
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int pos = HashUtil.mix(strategy.hashCode(o)) & mask;
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while(!strategy.equals(keys[pos], EMPTY_KEY_VALUE)) {
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if(strategy.equals(keys[pos], o)) {
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moveToLastIndex(pos);
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return true;
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}
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pos = ++pos & mask;
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}
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}
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return false;
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}
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protected void moveToFirstIndex(int startPos) {
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if(size == 1 || firstIndex == startPos) return;
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if(lastIndex == startPos) {
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lastIndex = (int)(links[startPos] >>> 32);
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links[lastIndex] |= 0xFFFFFFFFL;
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}
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else {
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long link = links[startPos];
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int prev = (int)(link >>> 32);
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int next = (int)link;
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links[prev] ^= ((links[prev] ^ (link & 0xFFFFFFFFL)) & 0xFFFFFFFFL);
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links[next] ^= ((links[next] ^ (link & 0xFFFFFFFF00000000L)) & 0xFFFFFFFF00000000L);
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}
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links[firstIndex] ^= ((links[firstIndex] ^ ((startPos & 0xFFFFFFFFL) << 32)) & 0xFFFFFFFF00000000L);
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links[startPos] = 0xFFFFFFFF00000000L | (firstIndex & 0xFFFFFFFFL);
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firstIndex = startPos;
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}
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protected void moveToLastIndex(int startPos) {
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if(size == 1 || lastIndex == startPos) return;
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if(firstIndex == startPos) {
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firstIndex = (int)links[startPos];
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links[lastIndex] |= 0xFFFFFFFF00000000L;
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}
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else {
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long link = links[startPos];
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int prev = (int)(link >>> 32);
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int next = (int)link;
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links[prev] ^= ((links[prev] ^ (link & 0xFFFFFFFFL)) & 0xFFFFFFFFL);
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links[next] ^= ((links[next] ^ (link & 0xFFFFFFFF00000000L)) & 0xFFFFFFFF00000000L);
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}
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links[lastIndex] ^= ((links[lastIndex] ^ (startPos & 0xFFFFFFFFL)) & 0xFFFFFFFFL);
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links[startPos] = ((lastIndex & 0xFFFFFFFFL) << 32) | 0xFFFFFFFFL;
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lastIndex = startPos;
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}
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@Override
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public KEY_TYPE FIRST_KEY() {
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if(size == 0) throw new NoSuchElementException();
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return keys[firstIndex];
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}
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@Override
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public KEY_TYPE POLL_FIRST_KEY() {
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if(size == 0) throw new NoSuchElementException();
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int pos = firstIndex;
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firstIndex = (int)links[pos];
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if(0 <= firstIndex) links[firstIndex] |= 0xFFFFFFFF00000000L;
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KEY_TYPE result = keys[pos];
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size--;
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if(strategy.equals(result, EMPTY_KEY_VALUE)) {
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containsNull = false;
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keys[nullIndex] = EMPTY_KEY_VALUE;
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}
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else shiftKeys(pos);
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if(nullIndex > minCapacity && size < maxFill / 4 && nullIndex > HashUtil.DEFAULT_MIN_CAPACITY) rehash(nullIndex / 2);
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return result;
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}
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@Override
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public KEY_TYPE LAST_KEY() {
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if(size == 0) throw new NoSuchElementException();
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return keys[lastIndex];
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}
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@Override
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public KEY_TYPE POLL_LAST_KEY() {
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if(size == 0) throw new NoSuchElementException();
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int pos = lastIndex;
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lastIndex = (int)(links[pos] >>> 32);
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if(0 <= lastIndex) links[lastIndex] |= 0xFFFFFFFFL;
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KEY_TYPE result = keys[pos];
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size--;
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if(strategy.equals(result, EMPTY_KEY_VALUE)) {
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containsNull = false;
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keys[nullIndex] = EMPTY_KEY_VALUE;
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}
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else shiftKeys(pos);
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if(nullIndex > minCapacity && size < maxFill / 4 && nullIndex > HashUtil.DEFAULT_MIN_CAPACITY) rehash(nullIndex / 2);
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return result;
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}
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@Override
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protected void onNodeAdded(int pos) {
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if(size == 0) {
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firstIndex = lastIndex = pos;
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links[pos] = -1L;
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}
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else {
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links[lastIndex] ^= ((links[lastIndex] ^ (pos & 0xFFFFFFFFL)) & 0xFFFFFFFFL);
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links[pos] = ((lastIndex & 0xFFFFFFFFL) << 32) | 0xFFFFFFFFL;
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lastIndex = pos;
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}
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}
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@Override
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protected void onNodeRemoved(int pos) {
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if(size == 0) firstIndex = lastIndex = -1;
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else if(firstIndex == pos) {
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firstIndex = (int)links[pos];
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if(0 <= firstIndex) links[firstIndex] |= 0xFFFFFFFF00000000L;
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}
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else if(lastIndex == pos) {
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lastIndex = (int)(links[pos] >>> 32);
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if(0 <= lastIndex) links[pos] |= 0xFFFFFFFFL;
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}
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else {
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long link = links[pos];
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int prev = (int)(link >>> 32);
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int next = (int)link;
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links[prev] ^= ((links[prev] ^ (link & 0xFFFFFFFFL)) & 0xFFFFFFFFL);
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links[next] ^= ((links[next] ^ (link & 0xFFFFFFFF00000000L)) & 0xFFFFFFFF00000000L);
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}
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}
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@Override
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protected void onNodeMoved(int from, int to) {
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if(size == 1) {
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firstIndex = lastIndex = to;
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links[to] = -1L;
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}
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else if(firstIndex == from) {
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firstIndex = to;
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links[(int)links[from]] ^= ((links[(int)links[from]] ^ ((to & 0xFFFFFFFFL) << 32)) & 0xFFFFFFFF00000000L);
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links[to] = links[from];
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}
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else if(lastIndex == from) {
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lastIndex = to;
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links[(int)(links[from] >>> 32)] ^= ((links[(int)(links[from] >>> 32)] ^ (to & 0xFFFFFFFFL)) & 0xFFFFFFFFL);
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links[to] = links[from];
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}
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else {
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long link = links[from];
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int prev = (int)(link >>> 32);
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int next = (int)link;
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links[prev] ^= ((links[prev] ^ (to & 0xFFFFFFFFL)) & 0xFFFFFFFFL);
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links[next] ^= ((links[next] ^ ((to & 0xFFFFFFFFL) << 32)) & 0xFFFFFFFF00000000L);
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links[to] = link;
|
|
}
|
|
}
|
|
|
|
@Override
|
|
protected void rehash(int newSize) {
|
|
int newMask = newSize - 1;
|
|
KEY_TYPE[] newKeys = NEW_KEY_ARRAY(newSize + 1);
|
|
long[] newLinks = new long[newSize + 1];
|
|
int i = firstIndex, prev = -1, newPrev = -1, pos;
|
|
firstIndex = -1;
|
|
for(int j = size; j-- != 0;) {
|
|
if(strategy.equals(keys[i], EMPTY_KEY_VALUE)) pos = newSize;
|
|
else {
|
|
pos = HashUtil.mix(strategy.hashCode(keys[i])) & newMask;
|
|
while(!strategy.equals(newKeys[pos], EMPTY_KEY_VALUE)) pos = ++pos & newMask;
|
|
}
|
|
newKeys[pos] = keys[i];
|
|
if(prev != -1) {
|
|
newLinks[newPrev] ^= ((newLinks[newPrev] ^ (pos & 0xFFFFFFFFL)) & 0xFFFFFFFFL);
|
|
newLinks[pos] ^= ((newLinks[pos] ^ ((newPrev & 0xFFFFFFFFL) << 32)) & 0xFFFFFFFF00000000L);
|
|
newPrev = pos;
|
|
}
|
|
else {
|
|
newPrev = firstIndex = pos;
|
|
newLinks[pos] = -1L;
|
|
}
|
|
i = (int)links[prev = i];
|
|
}
|
|
links = newLinks;
|
|
lastIndex = newPrev;
|
|
if(newPrev != -1) newLinks[newPrev] |= 0xFFFFFFFFL;
|
|
nullIndex = newSize;
|
|
mask = newMask;
|
|
maxFill = Math.min((int)Math.ceil(nullIndex * loadFactor), nullIndex - 1);
|
|
keys = newKeys;
|
|
}
|
|
|
|
@Override
|
|
public void clear() {
|
|
super.clear();
|
|
firstIndex = lastIndex = -1;
|
|
}
|
|
|
|
@Override
|
|
public void clearAndTrim(int size) {
|
|
if(nullIndex <= size) {
|
|
clear();
|
|
return;
|
|
}
|
|
nullIndex = size;
|
|
mask = nullIndex - 1;
|
|
maxFill = Math.min((int)Math.ceil(nullIndex * loadFactor), nullIndex - 1);
|
|
keys = NEW_KEY_ARRAY(nullIndex + 1);
|
|
links = new long[nullIndex + 1];
|
|
firstIndex = -1;
|
|
lastIndex = -1;
|
|
}
|
|
|
|
@Override
|
|
public LIST_ITERATOR KEY_GENERIC_TYPE iterator() {
|
|
return new SetIterator();
|
|
}
|
|
|
|
@Override
|
|
public BI_ITERATOR KEY_GENERIC_TYPE iterator(KEY_TYPE fromElement) {
|
|
return new SetIterator(fromElement);
|
|
}
|
|
|
|
@Override
|
|
public COMPARATOR KEY_GENERIC_TYPE comparator() { return null; }
|
|
|
|
@Override
|
|
public SORTED_SET KEY_GENERIC_TYPE subSet(KEY_TYPE fromElement, KEY_TYPE toElement) { throw new UnsupportedOperationException(); }
|
|
|
|
@Override
|
|
public SORTED_SET KEY_GENERIC_TYPE headSet(KEY_TYPE toElement) { throw new UnsupportedOperationException(); }
|
|
|
|
@Override
|
|
public SORTED_SET KEY_GENERIC_TYPE tailSet(KEY_TYPE fromElement) { throw new UnsupportedOperationException(); }
|
|
|
|
private class SetIterator implements LIST_ITERATOR KEY_GENERIC_TYPE {
|
|
int previous = -1;
|
|
int next = -1;
|
|
int current = -1;
|
|
int index = 0;
|
|
|
|
SetIterator() {
|
|
next = firstIndex;
|
|
}
|
|
|
|
SetIterator(KEY_TYPE from) {
|
|
if(strategy.equals(from, EMPTY_KEY_VALUE)) {
|
|
if(containsNull) {
|
|
next = (int) links[nullIndex];
|
|
previous = nullIndex;
|
|
}
|
|
else throw new NoSuchElementException("The null element is not in the set");
|
|
}
|
|
else if(strategy.equals(keys[lastIndex], from)) {
|
|
previous = lastIndex;
|
|
index = size;
|
|
}
|
|
else {
|
|
int pos = HashUtil.mix(strategy.hashCode(from)) & mask;
|
|
while(!strategy.equals(keys[pos], EMPTY_KEY_VALUE)) {
|
|
if(strategy.equals(keys[pos], from)) {
|
|
next = (int)links[pos];
|
|
previous = pos;
|
|
break;
|
|
}
|
|
pos = ++pos & mask;
|
|
}
|
|
if(previous == -1 && next == -1)
|
|
throw new NoSuchElementException("The element was not found");
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public boolean hasNext() {
|
|
return next != -1;
|
|
}
|
|
|
|
@Override
|
|
public boolean hasPrevious() {
|
|
return previous != -1;
|
|
}
|
|
|
|
@Override
|
|
public int nextIndex() {
|
|
ensureIndexKnown();
|
|
return index;
|
|
}
|
|
|
|
@Override
|
|
public int previousIndex() {
|
|
ensureIndexKnown();
|
|
return index - 1;
|
|
}
|
|
|
|
@Override
|
|
public void remove() {
|
|
if(current == -1) throw new IllegalStateException();
|
|
ensureIndexKnown();
|
|
if(current == previous) {
|
|
index--;
|
|
previous = (int)(links[current] >>> 32);
|
|
}
|
|
else next = (int)links[current];
|
|
size--;
|
|
if(previous == -1) firstIndex = next;
|
|
else links[previous] ^= ((links[previous] ^ (next & 0xFFFFFFFFL)) & 0xFFFFFFFFL);
|
|
|
|
if (next == -1) lastIndex = previous;
|
|
else links[next] ^= ((links[next] ^ ((previous & 0xFFFFFFFFL) << 32)) & 0xFFFFFFFF00000000L);
|
|
if(current == nullIndex) {
|
|
current = -1;
|
|
containsNull = false;
|
|
keys[nullIndex] = EMPTY_KEY_VALUE;
|
|
}
|
|
else {
|
|
int slot, last, startPos = current;
|
|
current = -1;
|
|
KEY_TYPE current;
|
|
while(true) {
|
|
startPos = ((last = startPos) + 1) & mask;
|
|
while(true){
|
|
if(strategy.equals((current = keys[startPos]), EMPTY_KEY_VALUE)) {
|
|
keys[last] = EMPTY_KEY_VALUE;
|
|
return;
|
|
}
|
|
slot = HashUtil.mix(strategy.hashCode(current)) & mask;
|
|
if(last <= startPos ? (last >= slot || slot > startPos) : (last >= slot && slot > startPos)) break;
|
|
startPos = ++startPos & mask;
|
|
}
|
|
keys[last] = current;
|
|
if(next == startPos) next = last;
|
|
if(previous == startPos) previous = last;
|
|
onNodeMoved(startPos, last);
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public KEY_TYPE PREVIOUS() {
|
|
if(!hasPrevious()) throw new NoSuchElementException();
|
|
current = previous;
|
|
previous = (int)(links[current] >> 32);
|
|
next = current;
|
|
if(index >= 0) index--;
|
|
return keys[current];
|
|
}
|
|
|
|
@Override
|
|
public KEY_TYPE NEXT() {
|
|
if(!hasNext()) throw new NoSuchElementException();
|
|
current = next;
|
|
next = (int)(links[current]);
|
|
previous = current;
|
|
if(index >= 0) index++;
|
|
return keys[current];
|
|
}
|
|
|
|
private void ensureIndexKnown() {
|
|
if(index == -1) {
|
|
if(previous == -1) {
|
|
index = 0;
|
|
}
|
|
else if(next == -1) {
|
|
index = size;
|
|
}
|
|
else {
|
|
index = 1;
|
|
for(int pos = firstIndex;pos != previous;pos = (int)links[pos], index++);
|
|
}
|
|
}
|
|
}
|
|
|
|
#if TYPE_OBJECT
|
|
@Override
|
|
public void set(Object e) { throw new UnsupportedOperationException(); }
|
|
|
|
@Override
|
|
public void add(Object e) { throw new UnsupportedOperationException(); }
|
|
#else
|
|
@Override
|
|
public void set(KEY_TYPE e) { throw new UnsupportedOperationException(); }
|
|
|
|
@Override
|
|
public void add(KEY_TYPE e) { throw new UnsupportedOperationException(); }
|
|
#endif
|
|
}
|
|
}
|