forked from Speiger/Primitive-Collections
490 lines
15 KiB
Plaintext
490 lines
15 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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import java.util.function.Consumer;
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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 java.util.Objects;
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import speiger.src.collections.PACKAGE.collections.BI_ITERATOR;
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import speiger.src.collections.PACKAGE.collections.COLLECTION;
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import speiger.src.collections.PACKAGE.collections.ITERATOR;
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#if !TYPE_OBJECT
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import speiger.src.collections.PACKAGE.functions.COMPARATOR;
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import speiger.src.collections.PACKAGE.functions.CONSUMER;
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#endif
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import speiger.src.collections.PACKAGE.functions.consumer.BI_OBJECT_CONSUMER;
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import speiger.src.collections.PACKAGE.functions.function.PREDICATE;
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import speiger.src.collections.PACKAGE.lists.LIST_ITERATOR;
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import speiger.src.collections.PACKAGE.utils.ARRAYS;
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import speiger.src.collections.PACKAGE.utils.ITERATORS;
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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 Custom implementation of the HashSet
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* Instead of using Wrapper Object Arrays for storing keys and values there is dedicated arrays for storing keys.
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* Extra to that there is a couple quality of life functions provided
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* @Type(T)
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*/
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public class IMMUTABLE_HASH_SET KEY_GENERIC_TYPE extends ABSTRACT_SET KEY_GENERIC_TYPE implements SORTED_SET KEY_GENERIC_TYPE
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{
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/** The Backing keys array */
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protected transient KEY_TYPE[] keys;
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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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/** If a null value is present */
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protected transient boolean containsNull;
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/** Index of the Null Value */
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protected transient int nullIndex;
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/** Max Index that is allowed to be searched through nullIndex - 1 */
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protected transient int mask;
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/** Amount of Elements stored in the HashSet */
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protected int size;
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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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* 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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*/
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public IMMUTABLE_HASH_SET(KEY_TYPE[] array) {
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this(array, 0, array.length, HashUtil.DEFAULT_LOAD_FACTOR);
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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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* @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 IMMUTABLE_HASH_SET(KEY_TYPE[] array, float loadFactor) {
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this(array, 0, array.length, loadFactor);
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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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* @throws IllegalStateException if offset and length causes to step outside of the arrays range
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*/
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public IMMUTABLE_HASH_SET(KEY_TYPE[] array, int offset, int length) {
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this(array, offset, length, HashUtil.DEFAULT_LOAD_FACTOR);
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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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* @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 IMMUTABLE_HASH_SET(KEY_TYPE[] array, int offset, int length, float loadFactor) {
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init(array, offset, length, loadFactor);
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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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*/
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@Primitive
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public IMMUTABLE_HASH_SET(Collection<? extends CLASS_TYPE> collection) {
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this(collection, HashUtil.DEFAULT_LOAD_FACTOR);
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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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* @throws IllegalStateException if the loadfactor is either below/equal to 0 or above/equal to 1
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*/
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@Primitive
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public IMMUTABLE_HASH_SET(Collection<? extends CLASS_TYPE> collection, float loadFactor) {
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#if !TYPE_OBJECT
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init(ARRAYS.unwrap(collection.toArray(NEW_CLASS_ARRAY(collection.size()))), 0, collection.size(), loadFactor);
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#else
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init(collection.toArray(NEW_CLASS_ARRAY(collection.size())), 0, collection.size(), loadFactor);
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#endif
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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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*/
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public IMMUTABLE_HASH_SET(COLLECTION KEY_GENERIC_TYPE collection) {
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this(collection, HashUtil.DEFAULT_LOAD_FACTOR);
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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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* @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 IMMUTABLE_HASH_SET(COLLECTION KEY_GENERIC_TYPE collection, float loadFactor) {
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init(collection.TO_ARRAY(NEW_KEY_ARRAY(collection.size())), 0, collection.size(), loadFactor);
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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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*/
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public IMMUTABLE_HASH_SET(Iterator<CLASS_TYPE> iterator) {
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this(iterator, HashUtil.DEFAULT_LOAD_FACTOR);
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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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* @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 IMMUTABLE_HASH_SET(Iterator<CLASS_TYPE> iterator, float loadFactor) {
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this(ITERATORS.wrap(iterator), loadFactor);
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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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*/
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public IMMUTABLE_HASH_SET(ITERATOR KEY_GENERIC_TYPE iterator) {
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this(iterator, HashUtil.DEFAULT_LOAD_FACTOR);
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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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* @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 IMMUTABLE_HASH_SET(ITERATOR KEY_GENERIC_TYPE iterator, float loadFactor) {
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KEY_TYPE[] array = ARRAYS.pour(iterator);
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init(array, 0, array.length, loadFactor);
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}
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protected void init(KEY_TYPE[] a, int offset, int length, float loadFactor) {
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SanityChecks.checkArrayCapacity(a.length, offset, length);
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int newSize = HashUtil.arraySize(length+1, loadFactor);
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int newMask = newSize - 1;
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KEY_TYPE[] newKeys = NEW_KEY_ARRAY(newSize + 1);
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long[] newLinks = new long[newSize + 1];
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int prev = -1;
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for(int i = offset,m=offset+length;i<m;i++)
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{
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KEY_TYPE o = a[i];
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if(KEY_EQUALS_NULL(o)) {
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if(!containsNull) size++;
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containsNull = true;
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continue;
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}
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boolean found = true;
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int pos = HashUtil.mix(KEY_TO_HASH(o)) & newMask;
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KEY_TYPE current = newKeys[pos];
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if(KEY_EQUALS_NOT_NULL(current)) {
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if(KEY_EQUALS(current, o)) continue;
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while(KEY_EQUALS_NOT_NULL((current = newKeys[pos = (++pos & mask)]))) {
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if(KEY_EQUALS(current, o)) {
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found = false;
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break;
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}
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}
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}
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if(found) {
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size++;
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newKeys[pos] = o;
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if(prev != -1) {
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newLinks[prev] ^= ((newLinks[prev] ^ (pos & 0xFFFFFFFFL)) & 0xFFFFFFFFL);
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newLinks[pos] ^= ((newLinks[pos] ^ ((prev & 0xFFFFFFFFL) << 32)) & 0xFFFFFFFF00000000L);
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prev = pos;
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}
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else {
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prev = firstIndex = pos;
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newLinks[pos] = -1L;
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}
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}
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}
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nullIndex = size;
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mask = newMask;
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keys = newKeys;
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links = newLinks;
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lastIndex = prev;
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if(prev != -1) newLinks[prev] |= 0xFFFFFFFFL;
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}
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@Override
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public boolean add(KEY_TYPE o) { throw new UnsupportedOperationException(); }
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@Override
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@Primitive
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public boolean addAll(Collection<? extends CLASS_TYPE> c) { throw new UnsupportedOperationException(); }
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@Override
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public boolean addAll(COLLECTION KEY_GENERIC_TYPE c) { throw new UnsupportedOperationException(); }
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@Override
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public boolean addAndMoveToFirst(KEY_TYPE o) { throw new UnsupportedOperationException(); }
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@Override
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public boolean addAndMoveToLast(KEY_TYPE o) { throw new UnsupportedOperationException(); }
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@Override
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public boolean moveToFirst(KEY_TYPE o) { throw new UnsupportedOperationException(); }
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@Override
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public boolean moveToLast(KEY_TYPE o) { throw new UnsupportedOperationException(); }
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@Override
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public boolean contains(Object o) {
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if(o == null) return containsNull;
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int pos = HashUtil.mix(o.hashCode()) & mask;
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KEY_TYPE current = keys[pos];
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if(KEY_EQUALS_NULL(current)) return false;
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if(EQUALS_KEY_TYPE(current, o)) return true;
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while(true) {
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if(KEY_EQUALS_NULL((current = keys[pos = (++pos & mask)]))) return false;
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else if(EQUALS_KEY_TYPE(current, o)) return true;
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}
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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() { throw new UnsupportedOperationException(); }
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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() { throw new UnsupportedOperationException(); }
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@Override
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public boolean remove(Object o) { throw new UnsupportedOperationException(); }
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#if !TYPE_OBJECT
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@Override
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public boolean contains(KEY_TYPE o) {
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if(KEY_EQUALS_NULL(o)) return containsNull;
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int pos = HashUtil.mix(KEY_TO_HASH(o)) & mask;
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KEY_TYPE current = keys[pos];
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if(KEY_EQUALS_NULL(current)) return false;
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if(KEY_EQUALS(current, o)) return true;
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while(true) {
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if(KEY_EQUALS_NULL((current = keys[pos = (++pos & mask)]))) return false;
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else if(KEY_EQUALS(current, o)) return true;
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}
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}
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@Override
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public boolean remove(KEY_TYPE o) { throw new UnsupportedOperationException(); }
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#endif
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@Override
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public void forEach(CONSUMER KEY_SUPER_GENERIC_TYPE action) {
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Objects.requireNonNull(action);
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int index = firstIndex;
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while(index != -1) {
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action.accept(keys[index]);
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index = (int)links[index];
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}
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}
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@Override
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public <E> void forEach(E input, BI_OBJECT_CONSUMER KEY_VALUE_SPECIAL_GENERIC_TYPE action) {
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Objects.requireNonNull(action);
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int index = firstIndex;
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while(index != -1) {
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action.accept(keys[index], input);
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index = (int)links[index];
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}
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}
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@Override
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public boolean matchesAny(PREDICATE KEY_GENERIC_TYPE filter) {
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Objects.requireNonNull(filter);
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int index = firstIndex;
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while(index != -1) {
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if(filter.TEST_VALUE(keys[index])) return true;
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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 matchesNone(PREDICATE KEY_GENERIC_TYPE filter) {
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Objects.requireNonNull(filter);
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int index = firstIndex;
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while(index != -1) {
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if(filter.TEST_VALUE(keys[index])) return false;
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}
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return true;
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}
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@Override
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public boolean matchesAll(PREDICATE KEY_GENERIC_TYPE filter) {
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Objects.requireNonNull(filter);
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int index = firstIndex;
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while(index != -1) {
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if(!filter.TEST_VALUE(keys[index])) return false;
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}
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return true;
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}
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@Override
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public KEY_TYPE findFirst(PREDICATE KEY_GENERIC_TYPE filter) {
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Objects.requireNonNull(filter);
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int index = firstIndex;
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while(index != -1) {
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if(filter.TEST_VALUE(keys[index])) return keys[index];
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}
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return EMPTY_VALUE;
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}
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@Override
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public LIST_ITERATOR KEY_GENERIC_TYPE iterator() {
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return new SetIterator();
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}
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@Override
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public BI_ITERATOR KEY_GENERIC_TYPE iterator(KEY_TYPE fromElement) {
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return new SetIterator(fromElement);
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}
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@Override
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public COMPARATOR KEY_GENERIC_TYPE comparator() { return null; }
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@Override
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public SORTED_SET KEY_GENERIC_TYPE subSet(KEY_TYPE fromElement, KEY_TYPE toElement) { throw new UnsupportedOperationException(); }
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@Override
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public SORTED_SET KEY_GENERIC_TYPE headSet(KEY_TYPE toElement) { throw new UnsupportedOperationException(); }
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@Override
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public SORTED_SET KEY_GENERIC_TYPE tailSet(KEY_TYPE fromElement) { throw new UnsupportedOperationException(); }
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@Override
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public void clear() { throw new UnsupportedOperationException(); }
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@Override
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public int size() {
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return size;
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}
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private class SetIterator implements LIST_ITERATOR KEY_GENERIC_TYPE {
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int previous = -1;
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int next = -1;
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int current = -1;
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int index = 0;
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SetIterator() {
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next = firstIndex;
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}
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SetIterator(KEY_TYPE from) {
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if(KEY_EQUALS_NULL(from)) {
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if(containsNull) {
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next = (int) links[nullIndex];
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previous = nullIndex;
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}
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else throw new NoSuchElementException("The null element is not in the set");
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}
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else if(KEY_EQUALS(keys[lastIndex], from)) {
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previous = lastIndex;
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index = size;
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}
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else {
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int pos = HashUtil.mix(KEY_TO_HASH(from)) & mask;
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while(KEY_EQUALS_NOT_NULL(keys[pos])) {
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if(KEY_EQUALS(keys[pos], from)) {
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next = (int)links[pos];
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previous = pos;
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break;
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}
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pos = ++pos & mask;
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}
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if(previous == -1 && next == -1)
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throw new NoSuchElementException("The element was not found");
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}
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}
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@Override
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public boolean hasNext() {
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return next != -1;
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}
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@Override
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public boolean hasPrevious() {
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return previous != -1;
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}
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@Override
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public int nextIndex() {
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ensureIndexKnown();
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return index;
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}
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@Override
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public int previousIndex() {
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ensureIndexKnown();
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return index - 1;
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}
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@Override
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public void remove() { throw new UnsupportedOperationException(); }
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@Override
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public KEY_TYPE PREVIOUS() {
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if(!hasPrevious()) throw new NoSuchElementException();
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current = previous;
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previous = (int)(links[current] >> 32);
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next = current;
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if(index >= 0) index--;
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return keys[current];
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}
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@Override
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public KEY_TYPE NEXT() {
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if(!hasNext()) throw new NoSuchElementException();
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current = next;
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next = (int)(links[current]);
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previous = current;
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if(index >= 0) index++;
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return keys[current];
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}
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private void ensureIndexKnown() {
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if(index == -1) {
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if(previous == -1) {
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index = 0;
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}
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else if(next == -1) {
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index = size;
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}
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else {
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index = 1;
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for(int pos = firstIndex;pos != previous;pos = (int)links[pos], index++);
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}
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}
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}
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#if TYPE_OBJECT
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@Override
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public void set(Object e) { throw new UnsupportedOperationException(); }
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@Override
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public void add(Object e) { throw new UnsupportedOperationException(); }
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#else
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@Override
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public void set(KEY_TYPE e) { throw new UnsupportedOperationException(); }
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@Override
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public void add(KEY_TYPE e) { throw new UnsupportedOperationException(); }
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#endif
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}
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} |