/*
 * Copyright (c) 2018 Goldman Sachs.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Eclipse Distribution License v. 1.0 which accompany this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 */

package org.eclipse.collections.impl.map.mutable.primitive;

import java.io.IOException;
import java.io.Serializable;
import java.util.NoSuchElementException;
import org.eclipse.collections.impl.SpreadFunctions;
import org.eclipse.collections.api.block.function.primitive.LongToObjectFunction;
import org.eclipse.collections.api.block.function.primitive.ObjectLongToObjectFunction;
import org.eclipse.collections.api.block.predicate.primitive.LongPredicate;
import org.eclipse.collections.api.block.procedure.primitive.LongProcedure;
import org.eclipse.collections.api.iterator.LongIterator;
import org.eclipse.collections.api.set.ImmutableSet;
import org.eclipse.collections.api.set.MutableSet;
import org.eclipse.collections.api.set.primitive.ImmutableLongSet;
import org.eclipse.collections.impl.set.immutable.primitive.ImmutableLongSetSerializationProxy;
import org.eclipse.collections.impl.set.immutable.primitive.AbstractImmutableLongSet;
import org.eclipse.collections.impl.set.mutable.UnifiedSet;
import org.eclipse.collections.impl.set.mutable.primitive.LongHashSet;

This file was automatically generated from template file immutablePrimitiveMapKeySet.stg
Since:6.0.
/** * This file was automatically generated from template file immutablePrimitiveMapKeySet.stg * * @since 6.0. */
class ImmutableLongMapKeySet extends AbstractImmutableLongSet implements Serializable { private static final long serialVersionUID = 1L; private static final long EMPTY_KEY = 0L; private static final long REMOVED_KEY = 1L; private static final int CACHE_LINE_SIZE = 64; private static final int KEY_SIZE = 8; private static final int INITIAL_LINEAR_PROBE = CACHE_LINE_SIZE / KEY_SIZE / 2; /* half a cache line */ private final long[] keys; private final int occupiedWithData; private final boolean containsZeroKey; private final boolean containsOneKey; ImmutableLongMapKeySet(long[] keys, int occupiedWithData, boolean containsZeroKey, boolean containsOneKey) { this.keys = keys; this.occupiedWithData = occupiedWithData; this.containsZeroKey = containsZeroKey; this.containsOneKey = containsOneKey; } private static boolean isEmptyKey(long key) { return key == EMPTY_KEY; } private static boolean isRemovedKey(long key) { return key == REMOVED_KEY; } private static boolean isNonSentinel(long key) { return !isEmptyKey(key) && !isRemovedKey(key); } @Override public int hashCode() { int result = 0; if (this.containsZeroKey) { result += (int) (EMPTY_KEY ^ EMPTY_KEY >>> 32); } if (this.containsOneKey) { result += (int) (REMOVED_KEY ^ REMOVED_KEY >>> 32); } if (this.keys != null) { for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { result += (int) (this.keys[i] ^ this.keys[i] >>> 32); } } } return result; } @Override public int size() { return this.occupiedWithData + (this.containsOneKey ? 1 : 0) + (this.containsZeroKey ? 1 : 0); } @Override public void appendString(Appendable appendable, String start, String separator, String end) { try { appendable.append(start); int count = 0; if (this.containsZeroKey) { appendable.append(String.valueOf(EMPTY_KEY)); count++; } if (this.containsOneKey) { if (count > 0) { appendable.append(separator); } count++; appendable.append(String.valueOf(REMOVED_KEY)); } for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { if (count > 0) { appendable.append(separator); } count++; appendable.append(String.valueOf(this.keys[i])); } } appendable.append(end); } catch (IOException e) { throw new RuntimeException(e); } } @Override public LongIterator longIterator() { return new InternalLongIterator(); } @Override public long[] toArray() { long[] array = new long[this.size()]; int index = 0; if (this.containsZeroKey) { array[index] = EMPTY_KEY; index++; } if (this.containsOneKey) { array[index] = REMOVED_KEY; index++; } if (this.keys != null) { for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { array[index] = this.keys[i]; index++; } } } return array; } @Override public boolean contains(long value) { if (value == EMPTY_KEY) { return this.containsZeroKey; } if (value == REMOVED_KEY) { return this.containsOneKey; } return this.keys[this.probe(value)] == value; } @Override public void forEach(LongProcedure procedure) { this.each(procedure); }
Since:7.0.
/** * @since 7.0. */
@Override public void each(LongProcedure procedure) { if (this.containsZeroKey) { procedure.value(EMPTY_KEY); } if (this.containsOneKey) { procedure.value(REMOVED_KEY); } if (this.keys != null) { for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { procedure.value(this.keys[i]); } } } } @Override public ImmutableLongSet select(LongPredicate predicate) { LongHashSet result = new LongHashSet(); if (this.containsZeroKey && predicate.accept(EMPTY_KEY)) { result.add(EMPTY_KEY); } if (this.containsOneKey && predicate.accept(REMOVED_KEY)) { result.add(REMOVED_KEY); } for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && predicate.accept(this.keys[i])) { result.add(this.keys[i]); } } return result.toImmutable(); } @Override public ImmutableLongSet reject(LongPredicate predicate) { LongHashSet result = new LongHashSet(); if (this.containsZeroKey && !predicate.accept(EMPTY_KEY)) { result.add(EMPTY_KEY); } if (this.containsOneKey && !predicate.accept(REMOVED_KEY)) { result.add(REMOVED_KEY); } for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && !predicate.accept(this.keys[i])) { result.add(this.keys[i]); } } return result.toImmutable(); } @Override public <V> ImmutableSet<V> collect(LongToObjectFunction<? extends V> function) { MutableSet<V> target = UnifiedSet.newSet(this.size()); if (this.containsZeroKey) { target.add(function.valueOf(EMPTY_KEY)); } if (this.containsOneKey) { target.add(function.valueOf(REMOVED_KEY)); } if (this.keys != null) { for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { target.add(function.valueOf(this.keys[i])); } } } return target.toImmutable(); } @Override public long detectIfNone(LongPredicate predicate, long ifNone) { if (this.containsZeroKey && predicate.accept(EMPTY_KEY)) { return EMPTY_KEY; } if (this.containsOneKey && predicate.accept(REMOVED_KEY)) { return REMOVED_KEY; } for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && predicate.accept(this.keys[i])) { return this.keys[i]; } } return ifNone; } @Override public int count(LongPredicate predicate) { int count = 0; if (this.containsZeroKey && predicate.accept(EMPTY_KEY)) { count++; } if (this.containsOneKey && predicate.accept(REMOVED_KEY)) { count++; } for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && predicate.accept(this.keys[i])) { count++; } } return count; } @Override public boolean anySatisfy(LongPredicate predicate) { if (this.containsZeroKey && predicate.accept(EMPTY_KEY)) { return true; } if (this.containsOneKey && predicate.accept(REMOVED_KEY)) { return true; } for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && predicate.accept(this.keys[i])) { return true; } } return false; } @Override public boolean allSatisfy(LongPredicate predicate) { if (this.containsZeroKey && !predicate.accept(EMPTY_KEY)) { return false; } if (this.containsOneKey && !predicate.accept(REMOVED_KEY)) { return false; } for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && !predicate.accept(this.keys[i])) { return false; } } return true; } @Override public boolean noneSatisfy(LongPredicate predicate) { if (this.containsZeroKey && predicate.accept(EMPTY_KEY)) { return false; } if (this.containsOneKey && predicate.accept(REMOVED_KEY)) { return false; } for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && predicate.accept(this.keys[i])) { return false; } } return true; } @Override public long sum() { long result = 0L; long compensation = 0L; if (this.containsZeroKey) { long adjustedValue = EMPTY_KEY - compensation; long nextSum = result + adjustedValue; compensation = nextSum - result - adjustedValue; result = nextSum; } if (this.containsOneKey) { long adjustedValue = REMOVED_KEY - compensation; long nextSum = result + adjustedValue; compensation = nextSum - result - adjustedValue; result = nextSum; } if (this.keys != null) { for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { long adjustedValue = this.keys[i] - compensation; long nextSum = result + adjustedValue; compensation = nextSum - result - adjustedValue; result = nextSum; } } } return result; } @Override public long max() { if (this.isEmpty()) { throw new NoSuchElementException(); } long max = 0; boolean isMaxSet = false; if (this.containsZeroKey) { max = EMPTY_KEY; isMaxSet = true; } if (this.containsOneKey && (!isMaxSet || max < REMOVED_KEY)) { max = REMOVED_KEY; isMaxSet = true; } for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && (!isMaxSet || max < this.keys[i])) { max = this.keys[i]; isMaxSet = true; } } return max; } @Override public long min() { if (this.isEmpty()) { throw new NoSuchElementException(); } long min = 0; boolean isMinSet = false; if (this.containsZeroKey) { min = EMPTY_KEY; isMinSet = true; } if (this.containsOneKey && (!isMinSet || REMOVED_KEY < min)) { min = REMOVED_KEY; isMinSet = true; } for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && (!isMinSet || this.keys[i] < min)) { min = this.keys[i]; isMinSet = true; } } return min; } @Override public <T> T injectInto(T injectedValue, ObjectLongToObjectFunction<? super T, ? extends T> function) { T result = injectedValue; if (this.containsZeroKey) { result = function.valueOf(result, EMPTY_KEY); } if (this.containsOneKey) { result = function.valueOf(result, REMOVED_KEY); } if (this.keys != null) { for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { result = function.valueOf(result, this.keys[i]); } } } return result; } private Object writeReplace() { return new ImmutableLongSetSerializationProxy(this); } // exposed for testing int probe(long element) { int index = this.mask((int) element); long keyAtIndex = this.keys[index]; if (keyAtIndex == element || keyAtIndex == EMPTY_KEY) { return index; } int removedIndex = keyAtIndex == REMOVED_KEY ? index : -1; for (int i = 1; i < INITIAL_LINEAR_PROBE; i++) { int nextIndex = (index + i) & (this.keys.length - 1); keyAtIndex = this.keys[nextIndex]; if (keyAtIndex == element) { return nextIndex; } if (keyAtIndex == EMPTY_KEY) { return removedIndex == -1 ? nextIndex : removedIndex; } if (keyAtIndex == REMOVED_KEY && removedIndex == -1) { removedIndex = nextIndex; } } return this.probeTwo(element, removedIndex); } int probeTwo(long element, int removedIndex) { int index = this.spreadTwoAndMask(element); for (int i = 0; i < INITIAL_LINEAR_PROBE; i++) { int nextIndex = (index + i) & (this.keys.length - 1); long keyAtIndex = this.keys[nextIndex]; if (keyAtIndex == element) { return nextIndex; } if (keyAtIndex == EMPTY_KEY) { return removedIndex == -1 ? nextIndex : removedIndex; } if (keyAtIndex == REMOVED_KEY && removedIndex == -1) { removedIndex = nextIndex; } } return this.probeThree(element, removedIndex); } int probeThree(long element, int removedIndex) { int nextIndex = (int) SpreadFunctions.longSpreadOne(element); int spreadTwo = (int) Long.reverse(SpreadFunctions.longSpreadTwo(element)) | 1; while (true) { nextIndex = this.mask(nextIndex + spreadTwo); long keyAtIndex = this.keys[nextIndex]; if (keyAtIndex == element) { return nextIndex; } if (keyAtIndex == EMPTY_KEY) { return removedIndex == -1 ? nextIndex : removedIndex; } if (keyAtIndex == REMOVED_KEY && removedIndex == -1) { removedIndex = nextIndex; } } } // exposed for testing int spreadAndMask(long element) { long code = SpreadFunctions.longSpreadOne(element); return this.mask((int) code); } int spreadTwoAndMask(long element) { long code = SpreadFunctions.longSpreadTwo(element); return this.mask((int) code); } private int mask(int spread) { return spread & (this.keys.length - 1); } private class InternalLongIterator implements LongIterator { private int count; private int position; private boolean handledZero; private boolean handledOne; @Override public boolean hasNext() { return this.count < ImmutableLongMapKeySet.this.size(); } @Override public long next() { if (!this.hasNext()) { throw new NoSuchElementException("next() called, but the iterator is exhausted"); } this.count++; if (!this.handledZero) { this.handledZero = true; if (ImmutableLongMapKeySet.this.containsZeroKey) { return ImmutableLongMapKeySet.EMPTY_KEY; } } if (!this.handledOne) { this.handledOne = true; if (ImmutableLongMapKeySet.this.containsOneKey) { return ImmutableLongMapKeySet.REMOVED_KEY; } } long[] keys = ImmutableLongMapKeySet.this.keys; while (!ImmutableLongMapKeySet.isNonSentinel(keys[this.position])) { this.position++; } long result = ImmutableLongMapKeySet.this.keys[this.position]; this.position++; return result; } } }