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GS Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework.

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/*
 * Copyright 2014 Goldman Sachs.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.gs.collections.impl.map.mutable.primitive;

import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.Arrays;
import java.util.Iterator;
import java.util.NoSuchElementException;

import com.gs.collections.api.CharIterable;
import com.gs.collections.api.LazyCharIterable;
import com.gs.collections.api.FloatIterable;
import com.gs.collections.api.RichIterable;
import com.gs.collections.api.block.function.primitive.CharToFloatFunction;
import com.gs.collections.api.block.function.primitive.FloatFunction;
import com.gs.collections.api.block.function.primitive.FloatFunction0;
import com.gs.collections.api.block.function.primitive.FloatToFloatFunction;
import com.gs.collections.api.block.function.primitive.ObjectFloatToObjectFunction;
import com.gs.collections.api.block.predicate.primitive.CharFloatPredicate;
import com.gs.collections.api.block.procedure.Procedure;
import com.gs.collections.api.block.procedure.Procedure2;
import com.gs.collections.api.block.procedure.primitive.CharProcedure;
import com.gs.collections.api.block.procedure.primitive.CharFloatProcedure;
import com.gs.collections.api.block.procedure.primitive.ObjectIntProcedure;
import com.gs.collections.impl.SpreadFunctions;
import com.gs.collections.api.collection.primitive.MutableFloatCollection;
import com.gs.collections.api.iterator.CharIterator;
import com.gs.collections.api.iterator.MutableCharIterator;
import com.gs.collections.api.iterator.MutableFloatIterator;
import com.gs.collections.api.map.primitive.CharFloatMap;
import com.gs.collections.api.map.primitive.ImmutableCharFloatMap;
import com.gs.collections.api.map.primitive.MutableCharFloatMap;
import com.gs.collections.api.set.primitive.CharSet;
import com.gs.collections.api.set.primitive.FloatSet;
import com.gs.collections.api.set.primitive.MutableCharSet;
import com.gs.collections.api.tuple.primitive.CharFloatPair;
import com.gs.collections.impl.factory.primitive.CharFloatMaps;
import com.gs.collections.impl.iterator.UnmodifiableCharIterator;
import com.gs.collections.impl.lazy.AbstractLazyIterable;
import com.gs.collections.impl.lazy.primitive.AbstractLazyCharIterable;
import com.gs.collections.impl.set.mutable.primitive.CharHashSet;
import com.gs.collections.impl.tuple.primitive.PrimitiveTuples;

/**
 * This file was automatically generated from template file primitivePrimitiveHashMap.stg.
 *
 * @since 3.0.
 */
public class CharFloatHashMap extends AbstractMutableFloatValuesMap implements MutableCharFloatMap, Externalizable, MutableCharKeysMap
{
    private static final float EMPTY_VALUE = 0.0f;
    private static final long serialVersionUID = 1L;
    private static final char EMPTY_KEY = (char) 0;
    private static final char REMOVED_KEY = (char) 1;
    private static final int CACHE_LINE_SIZE = 64;
    private static final int KEY_SIZE = 2;
    private static final int INITIAL_LINEAR_PROBE = CACHE_LINE_SIZE / KEY_SIZE / 2; /* half a cache line */

    private static final int DEFAULT_INITIAL_CAPACITY = 8;

    private char[] keys;
    private float[] values;
    private int occupiedWithData;
    private int occupiedWithSentinels;

    private SentinelValues sentinelValues;

    private boolean copyKeysOnWrite;

    public CharFloatHashMap()
    {
        this.allocateTable(DEFAULT_INITIAL_CAPACITY << 1);
    }

    public CharFloatHashMap(int initialCapacity)
    {
        if (initialCapacity < 0)
        {
            throw new IllegalArgumentException("initial capacity cannot be less than 0");
        }
        int capacity = this.smallestPowerOfTwoGreaterThan(initialCapacity << 1);
        this.allocateTable(capacity);
    }

    public CharFloatHashMap(CharFloatMap map)
    {
        if (map instanceof CharFloatHashMap && ((CharFloatHashMap) map).occupiedWithSentinels == 0)
        {
            CharFloatHashMap hashMap = (CharFloatHashMap) map;
            this.occupiedWithData = hashMap.occupiedWithData;
            if (hashMap.sentinelValues != null)
            {
                this.sentinelValues = hashMap.sentinelValues.copy();
            }
            this.keys = Arrays.copyOf(hashMap.keys, hashMap.keys.length);
            this.values = Arrays.copyOf(hashMap.values, hashMap.values.length);
        }
        else
        {
            int capacity = this.smallestPowerOfTwoGreaterThan(Math.max(map.size(), DEFAULT_INITIAL_CAPACITY) << 1);
            this.allocateTable(capacity);
            this.putAll(map);
        }
    }

    public static CharFloatHashMap newWithKeysValues(char key1, float value1)
    {
        return new CharFloatHashMap(1).withKeyValue(key1, value1);
    }

    public static CharFloatHashMap newWithKeysValues(char key1, float value1, char key2, float value2)
    {
        return new CharFloatHashMap(2).withKeysValues(key1, value1, key2, value2);
    }

    public static CharFloatHashMap newWithKeysValues(char key1, float value1, char key2, float value2, char key3, float value3)
    {
        return new CharFloatHashMap(3).withKeysValues(key1, value1, key2, value2, key3, value3);
    }

    public static CharFloatHashMap newWithKeysValues(char key1, float value1, char key2, float value2, char key3, float value3, char key4, float value4)
    {
        return new CharFloatHashMap(4).withKeysValues(key1, value1, key2, value2, key3, value3, key4, value4);
    }

    private int smallestPowerOfTwoGreaterThan(int n)
    {
        return n > 1 ? Integer.highestOneBit(n - 1) << 1 : 1;
    }

    @Override
    protected int getOccupiedWithData()
    {
        return this.occupiedWithData;
    }

    @Override
    protected SentinelValues getSentinelValues()
    {
        return this.sentinelValues;
    }

    @Override
    protected void setSentinelValuesNull()
    {
        this.sentinelValues = null;
    }

    @Override
    protected float getEmptyValue()
    {
        return EMPTY_VALUE;
    }

    @Override
    protected int getTableSize()
    {
        return this.values.length;
    }

    @Override
    protected float getValueAtIndex(int index)
    {
        return this.values[index];
    }

    @Override
    public boolean equals(Object obj)
    {
        if (this == obj)
        {
            return true;
        }

        if (!(obj instanceof CharFloatMap))
        {
            return false;
        }

        CharFloatMap other = (CharFloatMap) obj;

        if (this.size() != other.size())
        {
            return false;
        }

        if (this.sentinelValues == null)
        {
            if (other.containsKey(EMPTY_KEY) || other.containsKey(REMOVED_KEY))
            {
                return false;
            }
        }
        else
        {
            if (this.sentinelValues.containsZeroKey && (!other.containsKey(EMPTY_KEY) || Float.compare(this.sentinelValues.zeroValue, other.getOrThrow(EMPTY_KEY)) != 0))
            {
                return false;
            }

            if (this.sentinelValues.containsOneKey && (!other.containsKey(REMOVED_KEY) || Float.compare(this.sentinelValues.oneValue, other.getOrThrow(REMOVED_KEY)) != 0))
            {
                return false;
            }
        }
        for (int i = 0; i < this.keys.length; i++)
        {
            char key = this.keys[i];
            if (isNonSentinel(key) && (!other.containsKey(key) || Float.compare(this.values[i], other.getOrThrow(key)) != 0))
            {
                return false;
            }
        }
        return true;
    }

    @Override
    public int hashCode()
    {
        int result = 0;

        if (this.sentinelValues != null)
        {
            if (this.sentinelValues.containsZeroKey)
            {
                result += (int) EMPTY_KEY ^ Float.floatToIntBits(this.sentinelValues.zeroValue);
            }
            if (this.sentinelValues.containsOneKey)
            {
                result += (int) REMOVED_KEY ^ Float.floatToIntBits(this.sentinelValues.oneValue);
            }
        }
        for (int i = 0; i < this.keys.length; i++)
        {
            if (isNonSentinel(this.keys[i]))
            {
                result += (int) this.keys[i] ^ Float.floatToIntBits(this.values[i]);
            }
        }

        return result;
    }

    @Override
    public String toString()
    {
        StringBuilder appendable = new StringBuilder();

        appendable.append("{");

        boolean first = true;

        if (this.sentinelValues != null)
        {
            if (this.sentinelValues.containsZeroKey)
            {
                appendable.append(EMPTY_KEY).append("=").append(this.sentinelValues.zeroValue);
                first = false;
            }
            if (this.sentinelValues.containsOneKey)
            {
                if (!first)
                {
                    appendable.append(", ");
                }
                appendable.append(REMOVED_KEY).append("=").append(this.sentinelValues.oneValue);
                first = false;
            }
        }
        for (int i = 0; i < this.keys.length; i++)
        {
            char key = this.keys[i];
            if (isNonSentinel(key))
            {
                if (!first)
                {
                    appendable.append(", ");
                }
                appendable.append(key).append("=").append(this.values[i]);
                first = false;
            }
        }
        appendable.append("}");

        return appendable.toString();
    }

    public MutableFloatIterator floatIterator()
    {
        return new InternalFloatIterator();
    }

    public  V injectInto(V injectedValue, ObjectFloatToObjectFunction function)
    {
        V result = injectedValue;

        if (this.sentinelValues != null)
        {
            if (this.sentinelValues.containsZeroKey)
            {
                result = function.valueOf(result, this.sentinelValues.zeroValue);
            }
            if (this.sentinelValues.containsOneKey)
            {
                result = function.valueOf(result, this.sentinelValues.oneValue);
            }
        }
        for (int i = 0; i < this.keys.length; i++)
        {
            if (isNonSentinel(this.keys[i]))
            {
                result = function.valueOf(result, this.values[i]);
            }
        }

        return result;
    }

    public void clear()
    {
        this.sentinelValues = null;
        this.occupiedWithData = 0;
        this.occupiedWithSentinels = 0;
        if (this.copyKeysOnWrite)
        {
            this.copyKeys();
        }
        Arrays.fill(this.keys, EMPTY_KEY);
        Arrays.fill(this.values, EMPTY_VALUE);
    }

    public void put(char key, float value)
    {
        if (isEmptyKey(key))
        {
            this.putForEmptySentinel(value);
            return;
        }

        if (isRemovedKey(key))
        {
            this.putForRemovedSentinel(value);
            return;
        }

        int index = this.probe(key);
        char keyAtIndex = this.keys[index];
        if (keyAtIndex == key)
        {
            this.values[index] = value;
        }
        else
        {
            this.addKeyValueAtIndex(key, value, index);
        }
    }

    private void putForRemovedSentinel(float value)
    {
        if (this.sentinelValues == null)
        {
            this.sentinelValues = new SentinelValues();
        }
        this.addRemovedKeyValue(value);
    }

    private void putForEmptySentinel(float value)
    {
        if (this.sentinelValues == null)
        {
            this.sentinelValues = new SentinelValues();
        }
        this.addEmptyKeyValue(value);
    }

    public void putAll(CharFloatMap map)
    {
        map.forEachKeyValue(new CharFloatProcedure()
        {
            public void value(char key, float value)
            {
                CharFloatHashMap.this.put(key, value);
            }
        });
    }

    public void removeKey(char key)
    {
        if (isEmptyKey(key))
        {
            if (this.sentinelValues == null || !this.sentinelValues.containsZeroKey)
            {
                return;
            }
            this.removeEmptyKey();
            return;
        }
        if (isRemovedKey(key))
        {
            if (this.sentinelValues == null || !this.sentinelValues.containsOneKey)
            {
                return;
            }
            this.removeRemovedKey();
            return;
        }
        int index = this.probe(key);
        if (this.keys[index] == key)
        {
            this.removeKeyAtIndex(index);
        }
    }

    public void remove(char key)
    {
        this.removeKey(key);
    }

    public float removeKeyIfAbsent(char key, float value)
    {
        if (isEmptyKey(key))
        {
            if (this.sentinelValues == null || !this.sentinelValues.containsZeroKey)
            {
                return value;
            }
            float oldValue = this.sentinelValues.zeroValue;
            this.removeEmptyKey();
            return oldValue;
        }
        if (isRemovedKey(key))
        {
            if (this.sentinelValues == null || !this.sentinelValues.containsOneKey)
            {
                return value;
            }
            float oldValue = this.sentinelValues.oneValue;
            this.removeRemovedKey();
            return oldValue;
        }
        int index = this.probe(key);
        if (this.keys[index] == key)
        {
            float oldValue = this.values[index];
            this.removeKeyAtIndex(index);
            return oldValue;
        }
        return value;
    }

    public float getIfAbsentPut(char key, float value)
    {
        if (isEmptyKey(key))
        {
            if (this.sentinelValues == null)
            {
                this.sentinelValues = new SentinelValues();
                this.addEmptyKeyValue(value);
                return value;
            }
            if (this.sentinelValues.containsZeroKey)
            {
                return this.sentinelValues.zeroValue;
            }
            this.addEmptyKeyValue(value);
            return value;
        }
        if (isRemovedKey(key))
        {
            if (this.sentinelValues == null)
            {
                this.sentinelValues = new SentinelValues();
                this.addRemovedKeyValue(value);
                return value;
            }
            if (this.sentinelValues.containsOneKey)
            {
                return this.sentinelValues.oneValue;
            }
            this.addRemovedKeyValue(value);
            return value;
        }
        int index = this.probe(key);
        if (this.keys[index] == key)
        {
            return this.values[index];
        }
        this.addKeyValueAtIndex(key, value, index);
        return value;
    }

    public float getIfAbsentPut(char key, FloatFunction0 function)
    {
        if (isEmptyKey(key))
        {
            if (this.sentinelValues == null)
            {
                float value = function.value();
                this.sentinelValues = new SentinelValues();
                this.addEmptyKeyValue(value);
                return value;
            }
            if (this.sentinelValues.containsZeroKey)
            {
                return this.sentinelValues.zeroValue;
            }
            float value = function.value();
            this.addEmptyKeyValue(value);
            return value;
        }
        if (isRemovedKey(key))
        {
            if (this.sentinelValues == null)
            {
                float value = function.value();
                this.sentinelValues = new SentinelValues();
                this.addRemovedKeyValue(value);
                return value;
            }
            if (this.sentinelValues.containsOneKey)
            {
                return this.sentinelValues.oneValue;
            }
            float value = function.value();
            this.addRemovedKeyValue(value);
            return value;
        }
        int index = this.probe(key);
        if (this.keys[index] == key)
        {
            return this.values[index];
        }
        float value = function.value();
        this.addKeyValueAtIndex(key, value, index);
        return value;
    }

    public 

float getIfAbsentPutWith(char key, FloatFunction function, P parameter) { if (isEmptyKey(key)) { if (this.sentinelValues == null) { float value = function.floatValueOf(parameter); this.sentinelValues = new SentinelValues(); this.addEmptyKeyValue(value); return value; } if (this.sentinelValues.containsZeroKey) { return this.sentinelValues.zeroValue; } float value = function.floatValueOf(parameter); this.addEmptyKeyValue(value); return value; } if (isRemovedKey(key)) { if (this.sentinelValues == null) { float value = function.floatValueOf(parameter); this.sentinelValues = new SentinelValues(); this.addRemovedKeyValue(value); return value; } if (this.sentinelValues.containsOneKey) { return this.sentinelValues.oneValue; } float value = function.floatValueOf(parameter); this.addRemovedKeyValue(value); return value; } int index = this.probe(key); if (this.keys[index] == key) { return this.values[index]; } float value = function.floatValueOf(parameter); this.addKeyValueAtIndex(key, value, index); return value; } public float getIfAbsentPutWithKey(char key, CharToFloatFunction function) { if (isEmptyKey(key)) { if (this.sentinelValues == null) { float value = function.valueOf(key); this.sentinelValues = new SentinelValues(); this.addEmptyKeyValue(value); return value; } if (this.sentinelValues.containsZeroKey) { return this.sentinelValues.zeroValue; } float value = function.valueOf(key); this.addEmptyKeyValue(value); return value; } if (isRemovedKey(key)) { if (this.sentinelValues == null) { float value = function.valueOf(key); this.sentinelValues = new SentinelValues(); this.addRemovedKeyValue(value); return value; } if (this.sentinelValues.containsOneKey) { return this.sentinelValues.oneValue; } float value = function.valueOf(key); this.addRemovedKeyValue(value); return value; } int index = this.probe(key); if (this.keys[index] == key) { return this.values[index]; } float value = function.valueOf(key); this.addKeyValueAtIndex(key, value, index); return value; } public float addToValue(char key, float toBeAdded) { if (isEmptyKey(key)) { if (this.sentinelValues == null) { this.sentinelValues = new SentinelValues(); this.addEmptyKeyValue(toBeAdded); } else if (this.sentinelValues.containsZeroKey) { this.sentinelValues.zeroValue += toBeAdded; } else { this.addEmptyKeyValue(toBeAdded); } return this.sentinelValues.zeroValue; } if (isRemovedKey(key)) { if (this.sentinelValues == null) { this.sentinelValues = new SentinelValues(); this.addRemovedKeyValue(toBeAdded); } else if (this.sentinelValues.containsOneKey) { this.sentinelValues.oneValue += toBeAdded; } else { this.addRemovedKeyValue(toBeAdded); } return this.sentinelValues.oneValue; } int index = this.probe(key); if (this.keys[index] == key) { this.values[index] += toBeAdded; return this.values[index]; } this.addKeyValueAtIndex(key, toBeAdded, index); return this.values[index]; } private void addKeyValueAtIndex(char key, float value, int index) { if (this.keys[index] == REMOVED_KEY) { this.occupiedWithSentinels--; } if (this.copyKeysOnWrite) { this.copyKeys(); } this.keys[index] = key; this.values[index] = value; this.occupiedWithData++; if (this.occupiedWithData + this.occupiedWithSentinels > this.maxOccupiedWithData()) { this.rehashAndGrow(); } } private void removeKeyAtIndex(int index) { if (this.copyKeysOnWrite) { this.copyKeys(); } this.keys[index] = REMOVED_KEY; this.values[index] = EMPTY_VALUE; this.occupiedWithData--; this.occupiedWithSentinels++; } private void copyKeys() { char[] copy = new char[this.keys.length]; System.arraycopy(this.keys, 0, copy, 0, this.keys.length); this.keys = copy; this.copyKeysOnWrite = false; } public float updateValue(char key, float initialValueIfAbsent, FloatToFloatFunction function) { if (isEmptyKey(key)) { if (this.sentinelValues == null) { this.sentinelValues = new SentinelValues(); this.addEmptyKeyValue(function.valueOf(initialValueIfAbsent)); } else if (this.sentinelValues.containsZeroKey) { this.sentinelValues.zeroValue = function.valueOf(this.sentinelValues.zeroValue); } else { this.addEmptyKeyValue(function.valueOf(initialValueIfAbsent)); } return this.sentinelValues.zeroValue; } if (isRemovedKey(key)) { if (this.sentinelValues == null) { this.sentinelValues = new SentinelValues(); this.addRemovedKeyValue(function.valueOf(initialValueIfAbsent)); } else if (this.sentinelValues.containsOneKey) { this.sentinelValues.oneValue = function.valueOf(this.sentinelValues.oneValue); } else { this.addRemovedKeyValue(function.valueOf(initialValueIfAbsent)); } return this.sentinelValues.oneValue; } int index = this.probe(key); if (this.keys[index] == key) { this.values[index] = function.valueOf(this.values[index]); return this.values[index]; } float value = function.valueOf(initialValueIfAbsent); this.addKeyValueAtIndex(key, value, index); return value; } public CharFloatHashMap withKeyValue(char key1, float value1) { this.put(key1, value1); return this; } public CharFloatHashMap withKeysValues(char key1, float value1, char key2, float value2) { this.put(key1, value1); this.put(key2, value2); return this; } public CharFloatHashMap withKeysValues(char key1, float value1, char key2, float value2, char key3, float value3) { this.put(key1, value1); this.put(key2, value2); this.put(key3, value3); return this; } public CharFloatHashMap withKeysValues(char key1, float value1, char key2, float value2, char key3, float value3, char key4, float value4) { this.put(key1, value1); this.put(key2, value2); this.put(key3, value3); this.put(key4, value4); return this; } public CharFloatHashMap withoutKey(char key) { this.removeKey(key); return this; } public CharFloatHashMap withoutAllKeys(CharIterable keys) { keys.forEach(new CharProcedure() { public void value(char key) { CharFloatHashMap.this.removeKey(key); } }); return this; } public MutableCharFloatMap asUnmodifiable() { return new UnmodifiableCharFloatMap(this); } public MutableCharFloatMap asSynchronized() { return new SynchronizedCharFloatMap(this); } public ImmutableCharFloatMap toImmutable() { return CharFloatMaps.immutable.ofAll(this); } public float get(char key) { return this.getIfAbsent(key, EMPTY_VALUE); } public float getIfAbsent(char key, float ifAbsent) { if (isEmptyKey(key) || isRemovedKey(key)) { return this.getForSentinel(key, ifAbsent); } if (this.occupiedWithSentinels == 0) { return this.fastGetIfAbsent(key, ifAbsent); } return this.slowGetIfAbsent(key, ifAbsent); } private float getForSentinel(char key, float ifAbsent) { if (isEmptyKey(key)) { if (this.sentinelValues == null || !this.sentinelValues.containsZeroKey) { return ifAbsent; } return this.sentinelValues.zeroValue; } if (this.sentinelValues == null || !this.sentinelValues.containsOneKey) { return ifAbsent; } return this.sentinelValues.oneValue; } private float slowGetIfAbsent(char key, float ifAbsent) { int index = this.probe(key); if (this.keys[index] == key) { return this.values[index]; } return ifAbsent; } private float fastGetIfAbsent(char key, float ifAbsent) { int index = this.mask((int) key); for (int i = 0; i < INITIAL_LINEAR_PROBE; i++) { char keyAtIndex = this.keys[index]; if (keyAtIndex == key) { return this.values[index]; } if (keyAtIndex == EMPTY_KEY) { return ifAbsent; } index = (index + 1) & (this.keys.length - 1); } return this.slowGetIfAbsentTwo(key, ifAbsent); } private float slowGetIfAbsentTwo(char key, float ifAbsent) { int index = this.probeTwo(key, -1); if (this.keys[index] == key) { return this.values[index]; } return ifAbsent; } public float getOrThrow(char key) { if (isEmptyKey(key)) { if (this.sentinelValues == null || !this.sentinelValues.containsZeroKey) { throw new IllegalStateException("Key " + key + " not present."); } return this.sentinelValues.zeroValue; } if (isRemovedKey(key)) { if (this.sentinelValues == null || !this.sentinelValues.containsOneKey) { throw new IllegalStateException("Key " + key + " not present."); } return this.sentinelValues.oneValue; } int index = this.probe(key); if (isNonSentinel(this.keys[index])) { return this.values[index]; } throw new IllegalStateException("Key " + key + " not present."); } public boolean containsKey(char key) { if (isEmptyKey(key)) { return this.sentinelValues != null && this.sentinelValues.containsZeroKey; } if (isRemovedKey(key)) { return this.sentinelValues != null && this.sentinelValues.containsOneKey; } return this.keys[this.probe(key)] == key; } public void forEachKey(CharProcedure procedure) { if (this.sentinelValues != null) { if (this.sentinelValues.containsZeroKey) { procedure.value(EMPTY_KEY); } if (this.sentinelValues.containsOneKey) { procedure.value(REMOVED_KEY); } } for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { procedure.value(this.keys[i]); } } } public void forEachKeyValue(CharFloatProcedure procedure) { if (this.sentinelValues != null) { if (this.sentinelValues.containsZeroKey) { procedure.value(EMPTY_KEY, this.sentinelValues.zeroValue); } if (this.sentinelValues.containsOneKey) { procedure.value(REMOVED_KEY, this.sentinelValues.oneValue); } } for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { procedure.value(this.keys[i], this.values[i]); } } } public LazyCharIterable keysView() { return new KeysView(); } public RichIterable keyValuesView() { return new KeyValuesView(); } public CharFloatHashMap select(CharFloatPredicate predicate) { CharFloatHashMap result = new CharFloatHashMap(); if (this.sentinelValues != null) { if (this.sentinelValues.containsZeroKey && predicate.accept(EMPTY_KEY, this.sentinelValues.zeroValue)) { result.put(EMPTY_KEY, this.sentinelValues.zeroValue); } if (this.sentinelValues.containsOneKey && predicate.accept(REMOVED_KEY, this.sentinelValues.oneValue)) { result.put(REMOVED_KEY, this.sentinelValues.oneValue); } } for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && predicate.accept(this.keys[i], this.values[i])) { result.put(this.keys[i], this.values[i]); } } return result; } public CharFloatHashMap reject(CharFloatPredicate predicate) { CharFloatHashMap result = new CharFloatHashMap(); if (this.sentinelValues != null) { if (this.sentinelValues.containsZeroKey && !predicate.accept(EMPTY_KEY, this.sentinelValues.zeroValue)) { result.put(EMPTY_KEY, this.sentinelValues.zeroValue); } if (this.sentinelValues.containsOneKey && !predicate.accept(REMOVED_KEY, this.sentinelValues.oneValue)) { result.put(REMOVED_KEY, this.sentinelValues.oneValue); } } for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && !predicate.accept(this.keys[i], this.values[i])) { result.put(this.keys[i], this.values[i]); } } return result; } public void writeExternal(ObjectOutput out) throws IOException { out.writeInt(this.size()); if (this.sentinelValues != null) { if (this.sentinelValues.containsZeroKey) { out.writeChar(EMPTY_KEY); out.writeFloat(this.sentinelValues.zeroValue); } if (this.sentinelValues.containsOneKey) { out.writeChar(REMOVED_KEY); out.writeFloat(this.sentinelValues.oneValue); } } for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { out.writeChar(this.keys[i]); out.writeFloat(this.values[i]); } } } public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException { int size = in.readInt(); for (int i = 0; i < size; i++) { this.put(in.readChar(), in.readFloat()); } } /** * Rehashes every element in the set into a new backing table of the smallest possible size and eliminating removed sentinels. */ public void compact() { this.rehash(this.smallestPowerOfTwoGreaterThan(this.size())); } private void rehashAndGrow() { this.rehash(this.keys.length << 1); } private void rehash(int newCapacity) { int oldLength = this.keys.length; char[] old = this.keys; float[] oldValues = this.values; this.allocateTable(newCapacity); this.occupiedWithData = 0; this.occupiedWithSentinels = 0; for (int i = 0; i < oldLength; i++) { if (isNonSentinel(old[i])) { this.put(old[i], oldValues[i]); } } } // exposed for testing int probe(char element) { int index = this.mask((int) element); char 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(char 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); char 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(char element, int removedIndex) { int nextIndex = (int) SpreadFunctions.charSpreadOne(element); int spreadTwo = Integer.reverse(SpreadFunctions.charSpreadTwo(element)) | 1; while (true) { nextIndex = this.mask(nextIndex + spreadTwo); char 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(char element) { int code = SpreadFunctions.charSpreadOne(element); return this.mask(code); } int spreadTwoAndMask(char element) { int code = SpreadFunctions.charSpreadTwo(element); return this.mask(code); } private int mask(int spread) { return spread & (this.keys.length - 1); } private void allocateTable(int sizeToAllocate) { this.keys = new char[sizeToAllocate]; this.values = new float[sizeToAllocate]; } private static boolean isEmptyKey(char key) { return key == EMPTY_KEY; } private static boolean isRemovedKey(char key) { return key == REMOVED_KEY; } private static boolean isNonSentinel(char key) { return !isEmptyKey(key) && !isRemovedKey(key); } @Override protected boolean isNonSentinelAtIndex(int index) { return !isEmptyKey(this.keys[index]) && !isRemovedKey(this.keys[index]); } private int maxOccupiedWithData() { return this.keys.length >> 1; } private int maxOccupiedWithSentinels() { return this.keys.length >> 2; } private class InternalFloatIterator implements MutableFloatIterator { private int count; private int position; private char lastKey; private boolean handledZero; private boolean handledOne; private boolean canRemove; public boolean hasNext() { return this.count < CharFloatHashMap.this.size(); } public float next() { if (!this.hasNext()) { throw new NoSuchElementException("next() called, but the iterator is exhausted"); } this.count++; this.canRemove = true; if (!this.handledZero) { this.handledZero = true; if (CharFloatHashMap.this.containsKey(EMPTY_KEY)) { this.lastKey = EMPTY_KEY; return CharFloatHashMap.this.get(EMPTY_KEY); } } if (!this.handledOne) { this.handledOne = true; if (CharFloatHashMap.this.containsKey(REMOVED_KEY)) { this.lastKey = REMOVED_KEY; return CharFloatHashMap.this.get(REMOVED_KEY); } } char[] keys = CharFloatHashMap.this.keys; while (!isNonSentinel(keys[this.position])) { this.position++; } this.lastKey = keys[this.position]; float result = CharFloatHashMap.this.values[this.position]; this.position++; return result; } public void remove() { if (!this.canRemove) { throw new IllegalStateException(); } CharFloatHashMap.this.removeKey(this.lastKey); this.count--; this.canRemove = false; } } private class KeysView extends AbstractLazyCharIterable { public CharIterator charIterator() { return new UnmodifiableCharIterator(new KeySetIterator()); } /** * @since 7.0. */ public void each(CharProcedure procedure) { CharFloatHashMap.this.forEachKey(procedure); } } private class KeySetIterator implements MutableCharIterator { private int count; private int position; private char lastKey; private boolean handledZero; private boolean handledOne; private boolean canRemove; public boolean hasNext() { return this.count < CharFloatHashMap.this.size(); } public char next() { if (!this.hasNext()) { throw new NoSuchElementException("next() called, but the iterator is exhausted"); } this.count++; this.canRemove = true; if (!this.handledZero) { this.handledZero = true; if (CharFloatHashMap.this.containsKey(EMPTY_KEY)) { this.lastKey = EMPTY_KEY; return this.lastKey; } } if (!this.handledOne) { this.handledOne = true; if (CharFloatHashMap.this.containsKey(REMOVED_KEY)) { this.lastKey = REMOVED_KEY; return this.lastKey; } } char[] keys = CharFloatHashMap.this.keys; while (!isNonSentinel(keys[this.position])) { this.position++; } this.lastKey = keys[this.position]; this.position++; return this.lastKey; } public void remove() { if (!this.canRemove) { throw new IllegalStateException(); } CharFloatHashMap.this.removeKey(this.lastKey); this.count--; this.canRemove = false; } } public MutableCharSet keySet() { return new KeySet(); } private class KeySet extends AbstractMutableCharKeySet { @Override protected MutableCharKeysMap getOuter() { return CharFloatHashMap.this; } @Override protected SentinelValues getSentinelValues() { return CharFloatHashMap.this.sentinelValues; } @Override protected char getKeyAtIndex(int index) { return CharFloatHashMap.this.keys[index]; } @Override protected int getTableSize() { return CharFloatHashMap.this.keys.length; } public MutableCharIterator charIterator() { return new KeySetIterator(); } public boolean retainAll(CharIterable source) { int oldSize = CharFloatHashMap.this.size(); final CharSet sourceSet = source instanceof CharSet ? (CharSet) source : source.toSet(); CharFloatHashMap retained = CharFloatHashMap.this.select(new CharFloatPredicate() { public boolean accept(char key, float value) { return sourceSet.contains(key); } }); if (retained.size() != oldSize) { CharFloatHashMap.this.keys = retained.keys; CharFloatHashMap.this.values = retained.values; CharFloatHashMap.this.sentinelValues = retained.sentinelValues; CharFloatHashMap.this.occupiedWithData = retained.occupiedWithData; CharFloatHashMap.this.occupiedWithSentinels = retained.occupiedWithSentinels; return true; } return false; } public boolean retainAll(char... source) { return this.retainAll(CharHashSet.newSetWith(source)); } public CharSet freeze() { CharFloatHashMap.this.copyKeysOnWrite = true; boolean containsZeroKey = false; boolean containsOneKey = false; if (CharFloatHashMap.this.sentinelValues != null) { containsZeroKey = CharFloatHashMap.this.sentinelValues.containsZeroKey; containsOneKey = CharFloatHashMap.this.sentinelValues.containsOneKey; } return new ImmutableCharMapKeySet(CharFloatHashMap.this.keys, CharFloatHashMap.this.occupiedWithData, containsZeroKey, containsOneKey); } } public MutableFloatCollection values() { return new ValuesCollection(); } private class ValuesCollection extends AbstractFloatValuesCollection { public MutableFloatIterator floatIterator() { return CharFloatHashMap.this.floatIterator(); } public boolean remove(float item) { int oldSize = CharFloatHashMap.this.size(); if (CharFloatHashMap.this.sentinelValues != null) { if (CharFloatHashMap.this.sentinelValues.containsZeroKey && Float.compare(item, CharFloatHashMap.this.sentinelValues.zeroValue) == 0) { CharFloatHashMap.this.removeKey(EMPTY_KEY); } if (CharFloatHashMap.this.sentinelValues.containsOneKey && Float.compare(item, CharFloatHashMap.this.sentinelValues.oneValue) == 0) { CharFloatHashMap.this.removeKey(REMOVED_KEY); } } for (int i = 0; i < CharFloatHashMap.this.keys.length; i++) { if (isNonSentinel(CharFloatHashMap.this.keys[i]) && Float.compare(item, CharFloatHashMap.this.values[i]) == 0) { CharFloatHashMap.this.removeKey(CharFloatHashMap.this.keys[i]); } } return oldSize != CharFloatHashMap.this.size(); } public boolean retainAll(FloatIterable source) { int oldSize = CharFloatHashMap.this.size(); final FloatSet sourceSet = source instanceof FloatSet ? (FloatSet) source : source.toSet(); CharFloatHashMap retained = CharFloatHashMap.this.select(new CharFloatPredicate() { public boolean accept(char key, float value) { return sourceSet.contains(value); } }); if (retained.size() != oldSize) { CharFloatHashMap.this.keys = retained.keys; CharFloatHashMap.this.values = retained.values; CharFloatHashMap.this.sentinelValues = retained.sentinelValues; CharFloatHashMap.this.occupiedWithData = retained.occupiedWithData; CharFloatHashMap.this.occupiedWithSentinels = retained.occupiedWithSentinels; return true; } return false; } } private class KeyValuesView extends AbstractLazyIterable { public void each(Procedure procedure) { if (CharFloatHashMap.this.sentinelValues != null) { if (CharFloatHashMap.this.sentinelValues.containsZeroKey) { procedure.value(PrimitiveTuples.pair(EMPTY_KEY, CharFloatHashMap.this.sentinelValues.zeroValue)); } if (CharFloatHashMap.this.sentinelValues.containsOneKey) { procedure.value(PrimitiveTuples.pair(REMOVED_KEY, CharFloatHashMap.this.sentinelValues.oneValue)); } } for (int i = 0; i < CharFloatHashMap.this.keys.length; i++) { if (isNonSentinel(CharFloatHashMap.this.keys[i])) { procedure.value(PrimitiveTuples.pair(CharFloatHashMap.this.keys[i], CharFloatHashMap.this.values[i])); } } } public void forEachWithIndex(ObjectIntProcedure objectIntProcedure) { int index = 0; if (CharFloatHashMap.this.sentinelValues != null) { if (CharFloatHashMap.this.sentinelValues.containsZeroKey) { objectIntProcedure.value(PrimitiveTuples.pair(EMPTY_KEY, CharFloatHashMap.this.sentinelValues.zeroValue), index); index++; } if (CharFloatHashMap.this.sentinelValues.containsOneKey) { objectIntProcedure.value(PrimitiveTuples.pair(REMOVED_KEY, CharFloatHashMap.this.sentinelValues.oneValue), index); index++; } } for (int i = 0; i < CharFloatHashMap.this.keys.length; i++) { if (isNonSentinel(CharFloatHashMap.this.keys[i])) { objectIntProcedure.value(PrimitiveTuples.pair(CharFloatHashMap.this.keys[i], CharFloatHashMap.this.values[i]), index); index++; } } } public

void forEachWith(Procedure2 procedure, P parameter) { if (CharFloatHashMap.this.sentinelValues != null) { if (CharFloatHashMap.this.sentinelValues.containsZeroKey) { procedure.value(PrimitiveTuples.pair(EMPTY_KEY, CharFloatHashMap.this.sentinelValues.zeroValue), parameter); } if (CharFloatHashMap.this.sentinelValues.containsOneKey) { procedure.value(PrimitiveTuples.pair(REMOVED_KEY, CharFloatHashMap.this.sentinelValues.oneValue), parameter); } } for (int i = 0; i < CharFloatHashMap.this.keys.length; i++) { if (isNonSentinel(CharFloatHashMap.this.keys[i])) { procedure.value(PrimitiveTuples.pair(CharFloatHashMap.this.keys[i], CharFloatHashMap.this.values[i]), parameter); } } } public Iterator iterator() { return new InternalKeyValuesIterator(); } public class InternalKeyValuesIterator implements Iterator { private int count; private int position; private boolean handledZero; private boolean handledOne; public CharFloatPair next() { if (!this.hasNext()) { throw new NoSuchElementException("next() called, but the iterator is exhausted"); } this.count++; if (!this.handledZero) { this.handledZero = true; if (CharFloatHashMap.this.containsKey(EMPTY_KEY)) { return PrimitiveTuples.pair(EMPTY_KEY, CharFloatHashMap.this.sentinelValues.zeroValue); } } if (!this.handledOne) { this.handledOne = true; if (CharFloatHashMap.this.containsKey(REMOVED_KEY)) { return PrimitiveTuples.pair(REMOVED_KEY, CharFloatHashMap.this.sentinelValues.oneValue); } } char[] keys = CharFloatHashMap.this.keys; while (!isNonSentinel(keys[this.position])) { this.position++; } CharFloatPair result = PrimitiveTuples.pair(keys[this.position], CharFloatHashMap.this.values[this.position]); this.position++; return result; } public void remove() { throw new UnsupportedOperationException("Cannot call remove() on " + this.getClass().getSimpleName()); } public boolean hasNext() { return this.count != CharFloatHashMap.this.size(); } } } }





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