primitive.ArrayShortList Maven / Gradle / Ivy
Show all versions of util Show documentation
/* Copyright (c) 2014 LibJ
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* You should have received a copy of The MIT License (MIT) along with this
* program. If not, see
* The {@code size}, {@code isEmpty}, {@code get}, and {@code set} operations run in constant time. The {@code add} operation runs
* in amortized constant time, that is, adding n elements requires O(n) time. All of the other operations run in linear time
* (roughly speaking).
*
* Each {@link ArrayShortList} instance has a capacity. The capacity is the size of the array used to store the elements in
* the list. It is always at least as large as the list size. As elements are added to an ArrayShortList, its capacity grows
* automatically. The details of the growth policy are not specified beyond the fact that adding an element has constant amortized
* time cost.
*
* An application can increase the capacity of an {@link ArrayShortList} instance before adding a large number of elements using the
* {@code ensureCapacity} operation. This may reduce the amount of incremental reallocation.
*
* Note that this implementation is not synchronized. If multiple threads access an {@link ArrayShortList} instance
* concurrently, and at least one of the threads modifies the list structurally, it must be synchronized externally. (A
* structural modification is any operation that adds or deletes one or more elements, or explicitly resizes the backing array;
* merely setting the value of an element is not a structural modification.) This is typically accomplished by synchronizing on some
* object that naturally encapsulates the list.
*/
@Generated(value="org.openjax.codegen.template.Templates", date="2024-02-27T13:50:20.763")
public class ArrayShortList extends PrimitiveArrayList implements ShortList, RandomAccess {
private static final short[] EMPTY_VALUEDATA = {};
/**
* Creates an empty list with an initial capacity of five.
*/
public ArrayShortList() {
valueData = new short[DEFAULT_INITIAL_CAPACITY];
fromIndex = 0;
}
/**
* Creates an empty list with the specified initial capacity.
*
* @param initialCapacity The initial capacity of the list.
* @throws IllegalArgumentException If the specified initial capacity is negative.
*/
public ArrayShortList(final int initialCapacity) {
if (initialCapacity < 0)
throw new IllegalArgumentException("Illegal Capacity: " + initialCapacity);
fromIndex = 0;
valueData = initialCapacity == 0 ? EMPTY_VALUEDATA : new short[initialCapacity];
}
/**
* Creates a list containing the values of the specified array.
*
* @param values The array whose values are to be placed into this list.
* @param offset The index of the first value to add.
* @param length The number of values to add.
* @throws NullPointerException If the specified array is null.
*/
public ArrayShortList(final short[] values, final int offset, final int length) {
fromIndex = 0;
valueData = new short[length];
System.arraycopy(values, offset, valueData, 0, length);
size = length;
}
/**
* Creates a list containing the values of the specified array.
*
* @param values The array whose values are to be placed into this list.
* @throws NullPointerException If the specified array is null.
*/
public ArrayShortList(final short ... values) {
this(values, 0, values.length);
}
/**
* Creates a list containing the values of the specified collection, in the order they are returned by the collection's
* iterator.
*
* @param c The collection whose values are to be placed into this list.
* @throws NullPointerException If the specified collection is null.
*/
public ArrayShortList(final Collection c) {
fromIndex = 0;
final int i$ = c.size();
if (i$ == 0) {
valueData = EMPTY_VALUEDATA;
}
else {
valueData = new short[i$];
final List l;
if (c instanceof List && CollectionUtil.isRandomAccess(l = (List)c)) {
int i = 0; do // [RA]
valueData[size++] = l.get(i);
while (++i < i$);
}
else {
final Iterator it = c.iterator(); do // [I]
valueData[size++] = it.next();
while (it.hasNext());
}
}
}
/**
* Creates a sub-list, and integrates it into the specified parent list's sub-list graph. A sub-list instance shares the parent
* list's {@link #valueData}, and modifications made to any list in the graph of sub-lists are propagated with the
* {@link PrimitiveArrayList#updateState(int,int)} method.
*
* @param parent The parent list.
* @param fromIndex Low endpoint (inclusive) of the subList.
* @param toIndex High endpoint (exclusive) of the subList.
* @throws NullPointerException If the specified parent list is null.
*/
private ArrayShortList(final ArrayShortList parent, final int fromIndex, final int toIndex) {
super(parent, fromIndex, toIndex);
}
/**
* Shifts the values in {@code valueData} right a distance of {@code dist} starting from {@code index}.
*
* @param start Index from which to shift the values to the right.
* @param dist Distance to shift the values by.
*/
private void shiftRight(final int start, final int dist) {
final int end = size + dist;
ensureCapacity(end);
for (int i = end - 1; i >= start + dist; --i) // [A]
valueData[i] = valueData[i - dist];
}
/**
* Shifts the values in {@code valueData} left a distance of {@code dist} starting from {@code index}.
*
* @param start Index from which to shift the values to the left.
* @param dist Distance to shift the values by.
*/
private void shiftLeft(final int start, final int dist) {
final int end = size - dist;
for (int i = start; i < end; ++i) // [A]
valueData[i] = valueData[i + dist];
}
@Override
public short get(final int index) {
Assertions.assertRange("index", index, "size()", size(), false);
return valueData[fromIndex + index];
}
@Override
public boolean add(final short value) {
final int index = toIndex > -1 ? toIndex : size;
shiftRight(index, 1);
valueData[updateState(index, 1)] = value;
return true;
}
@Override
public boolean add(int index, final short value) {
Assertions.assertRange("index", index, "size()", size(), true);
index += fromIndex;
shiftRight(index, 1);
valueData[updateState(index, 1)] = value;
return true;
}
/**
* Appends all of the values in the specified list to the end of this list, in the order that they are returned by the specified
* list's Iterator. The behavior of this operation is undefined if the specified list is modified while the operation is in
* progress. (This implies that the behavior of this call is undefined if the specified list is this list, and this list is
* nonempty.)
*
* @param list List containing values to be added to this list.
* @return {@code true} if this collection changed as a result of the call.
* @throws NullPointerException If the specified list is null.
*/
public boolean addAll(final ArrayShortList list) {
return addAll(list.valueData, list.fromIndex, list.toIndex > -1 ? list.toIndex : list.size);
}
/**
* Appends all of the values in the specified list to the end of this list, in the order that they are returned by the specified
* list's Iterator. The behavior of this operation is undefined if the specified list is modified while the operation is in
* progress. (This implies that the behavior of this call is undefined if the specified list is this list, and this list is
* nonempty.)
*
* @param list List containing values to be added to this list.
* @param offset The index of the first value to add.
* @param length The number of values to add.
* @return {@code true} if this collection changed as a result of the call.
* @throws IndexOutOfBoundsException If the offset or length are out of range
* ({@code offset < 0 || values.length < offset + length}).
* @throws NullPointerException If the specified list is null.
*/
public boolean addAll(final ArrayShortList list, final int offset, final int length) {
return addAll(list.valueData, offset + list.fromIndex, length);
}
/**
* Appends all of the values in the specified array to the end of this list, in the order that they appear in the array.
*
* @param values Array containing values to be added to this list.
* @param offset The index of the first value to add.
* @param length The number of values to add.
* @return {@code true} if this list changed as a result of the call.
* @throws IndexOutOfBoundsException If the offset or length are out of range
* ({@code offset < 0 || values.length < offset + length}).
* @throws NullPointerException If the specified array is null.
*/
@Override
public boolean addAll(final short[] values, final int offset, final int length) {
if (values.length == 0)
return false;
final int index = toIndex > -1 ? toIndex : size;
shiftRight(index, length);
System.arraycopy(values, offset, valueData, index, length);
updateState(index, length);
return true;
}
/**
* Appends all of the values in the specified array to the end of this list, in the order that they appear in the array.
*
* @param values Array containing values to be added to this list.
* @return {@code true} if this list changed as a result of the call.
* @throws NullPointerException If the specified array is null.
*/
@Override
public boolean addAll(final short ... values) {
return addAll(values, 0, values.length);
}
/**
* Inserts all of the values in the specified list into this list, starting at the specified position. Shifts the value currently
* at that position (if any) and any subsequent values to the right (increases their indices). The new values will appear in the
* list in the order that they are returned by the specified list's iterator.
*
* @param index Index at which to insert the first value from the specified list.
* @param list List containing values to be added to this list.
* @param offset The index of the first value to add.
* @param length The number of values to add.
* @return {@code true} if this collection changed as a result of the call.
* @throws IndexOutOfBoundsException If the index is out of range. ({@code index < 0 || size() < index}).
* @throws NullPointerException If the specified list is null.
*/
public boolean addAll(final int index, final ArrayShortList list, final int offset, final int length) {
return addAll(index, list.valueData, offset + list.fromIndex, length);
}
/**
* Inserts all of the values in the specified list into this list, starting at the specified position. Shifts the value currently
* at that position (if any) and any subsequent values to the right (increases their indices). The new values will appear in the
* list in the order that they are returned by the specified list's iterator.
*
* @param index Index at which to insert the first value from the specified list.
* @param list List containing values to be added to this list.
* @return {@code true} if this collection changed as a result of the call.
* @throws IndexOutOfBoundsException If the index is out of range ({@code index < 0 || size() < index}).
* @throws NullPointerException If the specified list is null.
*/
public boolean addAll(final int index, final ArrayShortList list) {
return addAll(index, list.valueData, list.fromIndex, list.toIndex > -1 ? list.toIndex : list.size);
}
@Override
public boolean addAll(int index, final short[] values, final int offset, final int length) {
Assertions.assertRange("index", index, "size()", size(), true);
if (values.length == 0)
return false;
index += fromIndex;
shiftRight(index, length);
System.arraycopy(values, offset, valueData, index, length);
updateState(index, length);
return true;
}
@Override
public boolean addAll(final Collection c) {
return addAll(c, size());
}
@Override
public boolean addAll(final int index, final Collection c) {
Assertions.assertRange("index", index, "size()", size(), true);
return addAll(c, index);
}
protected boolean addAll(final Collection c, int index) {
final int i$ = c.size();
if (i$ == 0)
return false;
index += fromIndex;
shiftRight(index, i$);
final List l;
if (c instanceof List && CollectionUtil.isRandomAccess(l = (List)c)) {
int i = 0; do { // [RA]
valueData[index] = l.get(i);
updateState(index++, 1);
}
while (++i < i$);
}
else {
final Iterator it = c.iterator(); do { // [I]
valueData[index] = it.next();
updateState(index++, 1);
}
while (it.hasNext());
}
return true;
}
@Override
public boolean addAll(final ShortCollection c) {
return addAll(c, size());
}
@Override
public boolean addAll(final int index, final ShortCollection c) {
Assertions.assertRange("index", index, "size()", size(), true);
return addAll(c, index);
}
protected boolean addAll(final ShortCollection c, int index) {
Assertions.assertRange("index", index, "size()", size(), true);
final int i$ = c.size();
if (i$ == 0)
return false;
index += fromIndex;
shiftRight(index, i$);
if (c instanceof ShortList && c instanceof RandomAccess) {
final ShortList l = (ShortList)c;
int i = 0;
do { // [RA]
valueData[index] = l.get(i);
updateState(index++, 1);
}
while (++i < i$);
}
else {
final ShortIterator it = c.iterator(); do {
valueData[index] = it.next();
updateState(index++, 1);
}
while (it.hasNext());
}
return true;
}
@Override
public short set(int index, final short value) {
Assertions.assertRange("index", index, "size()", size(), false);
index += fromIndex;
final short oldValue = valueData[index];
valueData[index] = value;
updateState(0, 0);
return oldValue;
}
@Override
public short removeIndex(int index) {
Assertions.assertRange("index", index, "size()", size(), false);
index += fromIndex;
final short value = valueData[index];
shiftLeft(index, 1);
updateState(index, -1);
return value;
}
@Override
public boolean retainAll(final Collection c) {
final int beforeSize = size;
for (int i = toIndex > -1 ? toIndex : size; i >= fromIndex; --i) { // [A]
if (!c.contains(valueData[i])) {
shiftLeft(i, 1);
updateState(i, -1);
}
}
return beforeSize != size;
}
@Override
public boolean retainAll(final ShortCollection c) {
final int beforeSize = size;
for (int i = toIndex > -1 ? toIndex : size; i >= fromIndex; --i) { // [A]
if (!c.contains(valueData[i])) {
shiftLeft(i, 1);
updateState(i, -1);
}
}
return beforeSize != size;
}
@Override
public int indexOf(final short value) {
for (int i = fromIndex, i$ = toIndex > -1 ? toIndex : size; i < i$; ++i) // [A]
if (valueData[i] == value)
return i - fromIndex;
return -1;
}
@Override
public int lastIndexOf(final short value) {
for (int i = toIndex > -1 ? toIndex : size; i >= fromIndex; --i) // [A]
if (valueData[i] == value)
return i - fromIndex;
return -1;
}
@Override
public void sort(final ShortComparator c) {
updateState(0, 0);
ArrayUtil.sort(valueData, fromIndex, toIndex > -1 ? toIndex : size, c);
}
@Override
public void sort(final Object[] p, final ShortComparator c) {
final int i$ = size();
if (p.length != i$)
throw new IllegalArgumentException("The length of the paired array (" + p.length + ") does not match that of this list (" + i$ + ")");
ShortPairedTimSort.sort(valueData, p, 0, i$, c != null ? c : Short::compare, null, 0, 0);
}
private class ShortItr implements ShortIterator {
int cursor = ArrayShortList.this.fromIndex;
int lastRet = -1;
int expectedModCount = modCount;
@Override
public boolean hasNext() {
return cursor != (toIndex > -1 ? toIndex : size);
}
@Override
public short next() {
checkForComodification();
final int i = cursor;
if (i >= (toIndex > -1 ? toIndex : size))
throw new NoSuchElementException();
if (i >= valueData.length)
throw new ConcurrentModificationException();
cursor = i + 1;
return valueData[lastRet = i];
}
@Override
public void remove() {
if (lastRet < 0)
throw new IllegalStateException();
checkForComodification();
try {
ArrayShortList.this.removeIndex(lastRet - fromIndex);
cursor = lastRet;
lastRet = -1;
expectedModCount = modCount;
}
catch (final IndexOutOfBoundsException e) {
throw new ConcurrentModificationException();
}
}
@Override
public void forEachRemaining(final ShortConsumer action) {
Objects.requireNonNull(action);
int i = cursor;
if (i >= (toIndex > -1 ? toIndex : size))
return;
if (i >= valueData.length)
throw new ConcurrentModificationException();
for (; i < (toIndex > -1 ? toIndex : size) && modCount == expectedModCount; ++i) // [A]
action.accept(valueData[i]);
cursor = i;
lastRet = i - 1;
checkForComodification();
}
final void checkForComodification() {
if (modCount != expectedModCount)
throw new ConcurrentModificationException();
}
}
private class ShortListItr extends ShortItr implements ShortListIterator {
ShortListItr(final int index) {
cursor = index + fromIndex;
}
@Override
public boolean hasPrevious() {
return cursor != fromIndex;
}
@Override
public int nextIndex() {
return cursor - fromIndex;
}
@Override
public int previousIndex() {
return cursor - fromIndex - 1;
}
@Override
public short previous() {
checkForComodification();
final int i = cursor - 1;
if (i < fromIndex)
throw new NoSuchElementException();
if (i >= valueData.length)
throw new ConcurrentModificationException();
cursor = i;
return valueData[lastRet = i];
}
@Override
public void set(final short value) {
if (lastRet < 0)
throw new IllegalStateException();
checkForComodification();
try {
ArrayShortList.this.set(lastRet - fromIndex, value);
}
catch (final IndexOutOfBoundsException e) {
throw new ConcurrentModificationException();
}
}
@Override
public void add(final short value) {
checkForComodification();
try {
final int i = cursor;
ArrayShortList.this.add(i - fromIndex, value);
cursor = i + 1;
lastRet = -1;
expectedModCount = modCount;
}
catch (final IndexOutOfBoundsException e) {
throw new ConcurrentModificationException();
}
}
@Override
public void remove() {
if (lastRet < 0)
throw new IllegalStateException();
checkForComodification();
try {
ArrayShortList.this.removeIndex(lastRet - fromIndex);
cursor = lastRet;
lastRet = -1;
expectedModCount = modCount;
}
catch (final IndexOutOfBoundsException e) {
throw new ConcurrentModificationException();
}
}
}
@Override
public ShortIterator iterator() {
return new ShortItr();
}
@Override
public ShortListIterator listIterator(final int index) {
Assertions.assertRange("index", index, "size()", size(), true);
return new ShortListItr(index);
}
@Override
public ArrayShortList subList(final int fromIndex, final int toIndex) {
Assertions.assertRange("fromIndex", fromIndex, "toIndex", toIndex, "size()", size());
if (this.toIndex < 0)
this.toIndex = size;
return new ArrayShortList(this, fromIndex + this.fromIndex, toIndex + this.fromIndex);
}
@Override
public short[] toArray(short[] a) {
final int size = size();
if (size > 0) {
if (a.length < size)
a = new short[size];
System.arraycopy(valueData, fromIndex, a, 0, size);
}
if (a.length > size)
a[size] = 0;
return a;
}
@Override
public Short[] toArray(Short[] a) {
final int size = size();
if (size > 0) {
if (a.length < size)
a = new Short[size];
for (int i = fromIndex, i$ = toIndex > -1 ? toIndex : size; i < i$; ++i) // [A]
a[i - fromIndex] = valueData[i];
}
if (a.length > size)
a[size] = null;
return a;
}
/**
* Trims the capacity of this {@link ArrayShortList} instance to be the list's current size. An application can use this operation
* to minimize the storage of an {@link ArrayShortList} instance.
*/
public void trimToSize() {
if (size < valueData.length) {
this.valueData = size == 0 ? EMPTY_VALUEDATA : Arrays.copyOf(valueData, size);
updateState(0, 0);
}
}
/**
* Increases the capacity of this {@link ArrayShortList} instance, if necessary, to ensure that it can hold at least the number of
* values specified by the minimum capacity argument.
*
* @param minCapacity The desired minimum capacity.
*/
public void ensureCapacity(final int minCapacity) {
if (minCapacity > valueData.length) {
final short[] oldData = valueData;
final int newCapacity = Math.max((valueData.length * 3) / 2 + 1, minCapacity);
final short[] valueData = new short[newCapacity];
System.arraycopy(oldData, 0, valueData, 0, size);
this.valueData = valueData;
updateState(0, 0);
}
}
// @Override
// public Spliterator.OfShort spliterator() {
// return Arrays.spliterator(valueData, fromIndex, toIndex > -1 ? toIndex : size);
// }
//
// @Override
// public ShortStream stream() {
// return Arrays.stream(valueData, fromIndex, toIndex > -1 ? toIndex : size);
// }
//
// @Override
// public ShortStream parallelStream() {
// return Arrays.stream(valueData, fromIndex, toIndex > -1 ? toIndex : size).parallel();
// }
@Override
public ArrayShortList clone() {
return (ArrayShortList)super.clone();
}
/**
* Returns the hash code value for this list.
*
* @return The hash code value for this list.
*/
@Override
public int hashCode() {
int hashCode = 1;
final int i$ = toIndex > -1 ? toIndex : size;
for (int i = fromIndex; i < i$; ++i) // [A]
hashCode = 31 * hashCode + Short.hashCode(valueData[i]);
return hashCode;
}
/**
* Compares the specified object with this list for equality. Returns {@code true} if and only if the specified object is also a
* {@link ArrayShortList}, both lists have the same size, and all corresponding pairs of values in the two lists are equal.
* In other words, two lists are defined to be equal if they contain the same values in the same order.
*/
@Override
public boolean equals(final Object obj) {
if (obj == this)
return true;
if (!(obj instanceof ArrayShortList))
return false;
final ArrayShortList that = (ArrayShortList)obj;
if (size() != that.size())
return false;
final int toIndex = this.toIndex > -1 ? this.toIndex : size;
final int thatToIndex = that.toIndex > -1 ? that.toIndex : that.size;
return ArrayUtil.equals(valueData, fromIndex, toIndex, that.valueData, that.fromIndex, thatToIndex);
}
/**
* Returns a string representation of this list. The string representation consists of a list of the list's values in the order
* they are stored in the underlying array, enclosed in square brackets ({@code "[]"}). Adjacent values are separated by the
* characters {@code ", "} (comma and space). Values are converted to strings as by {@link String#valueOf(Object)}.
*
* @return A string representation of this list.
*/
@Override
public String toString() {
return "[" + ArrayUtil.toString(valueData, ", ", fromIndex, size()) + "]";
}
}