/**
* Copyright 2008 - 2015 The Loon Game Engine Authors
*
* 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.
*
* @project loon
* @author cping
* @email：javachenpeng@yahoo.com
* @version 0.5
*/
package loon.utils;
import java.util.Iterator;
import java.util.NoSuchElementException;
import loon.LSystem;
import loon.utils.ObjectMap.Entry;
@SuppressWarnings({ "unchecked", "rawtypes" })
public class TArrayMap<K, V> implements Iterable<ObjectMap.Entry<K, V>>, IArray {
public K[] keys;
public V[] values;
public int size;
public boolean ordered;
private Entries entries1, entries2;
private Values valuesIter1, valuesIter2;
private Keys keysIter1, keysIter2;
public TArrayMap() {
this(true, CollectionUtils.INITIAL_CAPACITY);
}
public TArrayMap(int capacity) {
this(true, capacity);
}
public TArrayMap(boolean ordered, int capacity) {
this.ordered = ordered;
keys = (K[]) new Object[capacity];
values = (V[]) new Object[capacity];
}
public TArrayMap(TArrayMap array) {
this(array.ordered, array.size);
size = array.size;
System.arraycopy(array.keys, 0, keys, 0, size);
System.arraycopy(array.values, 0, values, 0, size);
}
public void put(K key, V value) {
if (size == keys.length)
resize(MathUtils.max(8, (int) (size * 1.75f)));
int index = indexOfKey(key);
if (index == -1)
index = size++;
keys[index] = key;
values[index] = value;
}
public void put(K key, V value, int index) {
if (size == keys.length)
resize(MathUtils.max(8, (int) (size * 1.75f)));
int existingIndex = indexOfKey(key);
if (existingIndex != -1)
removeIndex(existingIndex);
System.arraycopy(keys, index, keys, index + 1, size - index);
System.arraycopy(values, index, values, index + 1, size - index);
keys[index] = key;
values[index] = value;
size++;
}
public void putAll(TArrayMap map) {
putAll(map, 0, map.size);
}
public void putAll(TArrayMap map, int offset, int length) {
if (offset + length > map.size)
throw new IllegalArgumentException(
"offset + length must be <= size: " + offset + " + "
+ length + " <= " + map.size);
int sizeNeeded = size + length - offset;
if (sizeNeeded >= keys.length)
resize(MathUtils.max(8, (int) (sizeNeeded * 1.75f)));
System.arraycopy(map.keys, offset, keys, size, length);
System.arraycopy(map.values, offset, values, size, length);
size += length;
}
public V get(K key) {
Object[] keys = this.keys;
int i = size - 1;
if (key == null) {
for (; i >= 0; i--)
if (keys[i] == key)
return values[i];
} else {
for (; i >= 0; i--)
if (key.equals(keys[i]))
return values[i];
}
return null;
}
public K getKey(V value, boolean identity) {
Object[] values = this.values;
int i = size - 1;
if (identity || value == null) {
for (; i >= 0; i--)
if (values[i] == value)
return keys[i];
} else {
for (; i >= 0; i--)
if (value.equals(values[i]))
return keys[i];
}
return null;
}
public K getKeyAt(int index) {
if (index >= size)
throw new IndexOutOfBoundsException(String.valueOf(index));
return keys[index];
}
public V getValueAt(int index) {
if (index >= size)
throw new IndexOutOfBoundsException(String.valueOf(index));
return values[index];
}
public K firstKey() {
if (size == 0)
throw new IllegalStateException("Map is empty.");
return keys[0];
}
public V firstValue() {
if (size == 0)
throw new IllegalStateException("Map is empty.");
return values[0];
}
public void setKey(int index, K key) {
if (index >= size)
throw new IndexOutOfBoundsException(String.valueOf(index));
keys[index] = key;
}
public void setValue(int index, V value) {
if (index >= size)
throw new IndexOutOfBoundsException(String.valueOf(index));
values[index] = value;
}
public void insert(int index, K key, V value) {
if (index > size)
throw new IndexOutOfBoundsException(String.valueOf(index));
if (size == keys.length)
resize(MathUtils.max(8, (int) (size * 1.75f)));
if (ordered) {
System.arraycopy(keys, index, keys, index + 1, size - index);
System.arraycopy(values, index, values, index + 1, size - index);
} else {
keys[size] = keys[index];
values[size] = values[index];
}
size++;
keys[index] = key;
values[index] = value;
}
public boolean containsKey(K key) {
K[] keys = this.keys;
int i = size - 1;
if (key == null) {
while (i >= 0)
if (keys[i--] == key)
return true;
} else {
while (i >= 0)
if (key.equals(keys[i--]))
return true;
}
return false;
}
public boolean containsValue(V value, boolean identity) {
V[] values = this.values;
int i = size - 1;
if (identity || value == null) {
while (i >= 0)
if (values[i--] == value)
return true;
} else {
while (i >= 0)
if (value.equals(values[i--]))
return true;
}
return false;
}
public int indexOfKey(K key) {
Object[] keys = this.keys;
if (key == null) {
for (int i = 0, n = size; i < n; i++)
if (keys[i] == key)
return i;
} else {
for (int i = 0, n = size; i < n; i++)
if (key.equals(keys[i]))
return i;
}
return -1;
}
public int indexOfValue(V value, boolean identity) {
Object[] values = this.values;
if (identity || value == null) {
for (int i = 0, n = size; i < n; i++)
if (values[i] == value)
return i;
} else {
for (int i = 0, n = size; i < n; i++)
if (value.equals(values[i]))
return i;
}
return -1;
}
public V removeKey(K key) {
Object[] keys = this.keys;
if (key == null) {
for (int i = 0, n = size; i < n; i++) {
if (keys[i] == key) {
V value = values[i];
removeIndex(i);
return value;
}
}
} else {
for (int i = 0, n = size; i < n; i++) {
if (key.equals(keys[i])) {
V value = values[i];
removeIndex(i);
return value;
}
}
}
return null;
}
public boolean removeValue(V value, boolean identity) {
Object[] values = this.values;
if (identity || value == null) {
for (int i = 0, n = size; i < n; i++) {
if (values[i] == value) {
removeIndex(i);
return true;
}
}
} else {
for (int i = 0, n = size; i < n; i++) {
if (value.equals(values[i])) {
removeIndex(i);
return true;
}
}
}
return false;
}
public void removeIndex(int index) {
if (index >= size)
throw new IndexOutOfBoundsException(String.valueOf(index));
Object[] keys = this.keys;
size--;
if (ordered) {
System.arraycopy(keys, index + 1, keys, index, size - index);
System.arraycopy(values, index + 1, values, index, size - index);
} else {
keys[index] = keys[size];
values[index] = values[size];
}
keys[size] = null;
values[size] = null;
}
public K peekKey() {
return keys[size - 1];
}
public V peekValue() {
return values[size - 1];
}
public void clear(int maximumCapacity) {
if (keys.length <= maximumCapacity) {
clear();
return;
}
size = 0;
resize(maximumCapacity);
}
public void clear() {
K[] keys = this.keys;
V[] values = this.values;
for (int i = 0, n = size; i < n; i++) {
keys[i] = null;
values[i] = null;
}
size = 0;
}
public void shrink() {
if (keys.length == size)
return;
resize(size);
}
public void ensureCapacity(int additionalCapacity) {
int sizeNeeded = size + additionalCapacity;
if (sizeNeeded >= keys.length)
resize(MathUtils.max(8, sizeNeeded));
}
protected void resize(int newSize) {
K[] newKeys = (K[]) new Object[newSize];
System.arraycopy(keys, 0, newKeys, 0,
MathUtils.min(size, newKeys.length));
this.keys = newKeys;
V[] newValues = (V[]) new Object[newSize];
System.arraycopy(values, 0, newValues, 0,
MathUtils.min(size, newValues.length));
this.values = newValues;
}
public void reverse() {
for (int i = 0, lastIndex = size - 1, n = size / 2; i < n; i++) {
int ii = lastIndex - i;
K tempKey = keys[i];
keys[i] = keys[ii];
keys[ii] = tempKey;
V tempValue = values[i];
values[i] = values[ii];
values[ii] = tempValue;
}
}
public void shuffle() {
for (int i = size - 1; i >= 0; i--) {
int ii = MathUtils.random(i);
K tempKey = keys[i];
keys[i] = keys[ii];
keys[ii] = tempKey;
V tempValue = values[i];
values[i] = values[ii];
values[ii] = tempValue;
}
}
public void truncate(int newSize) {
if (size <= newSize)
return;
for (int i = newSize; i < size; i++) {
keys[i] = null;
values[i] = null;
}
size = newSize;
}
public String toString() {
if (size == 0)
return "{}";
K[] keys = this.keys;
V[] values = this.values;
StringBuilder buffer = new StringBuilder(32);
buffer.append('{');
buffer.append(keys[0]);
buffer.append('=');
buffer.append(values[0]);
for (int i = 1; i < size; i++) {
buffer.append(", ");
buffer.append(keys[i]);
buffer.append('=');
buffer.append(values[i]);
}
buffer.append('}');
return buffer.toString();
}
public Iterator<Entry<K, V>> iterator() {
return entries();
}
public Entries<K, V> entries() {
if (entries1 == null) {
entries1 = new Entries(this);
entries2 = new Entries(this);
}
if (!entries1.valid) {
entries1.index = 0;
entries1.valid = true;
entries2.valid = false;
return entries1;
}
entries2.index = 0;
entries2.valid = true;
entries1.valid = false;
return entries2;
}
public Values<V> values() {
if (valuesIter1 == null) {
valuesIter1 = new Values(this);
valuesIter2 = new Values(this);
}
if (!valuesIter1.valid) {
valuesIter1.index = 0;
valuesIter1.valid = true;
valuesIter2.valid = false;
return valuesIter1;
}
valuesIter2.index = 0;
valuesIter2.valid = true;
valuesIter1.valid = false;
return valuesIter2;
}
public Keys<K> keys() {
if (keysIter1 == null) {
keysIter1 = new Keys(this);
keysIter2 = new Keys(this);
}
if (!keysIter1.valid) {
keysIter1.index = 0;
keysIter1.valid = true;
keysIter2.valid = false;
return keysIter1;
}
keysIter2.index = 0;
keysIter2.valid = true;
keysIter1.valid = false;
return keysIter2;
}
static public class Entries<K, V> implements Iterable<Entry<K, V>>,
Iterator<Entry<K, V>> {
private final TArrayMap<K, V> map;
Entry<K, V> entry = new Entry();
int index;
boolean valid = true;
public Entries(TArrayMap<K, V> map) {
this.map = map;
}
public boolean hasNext() {
if (!valid)
throw LSystem.runThrow("#iterator() cannot be used nested.");
return index < map.size;
}
public Iterator<Entry<K, V>> iterator() {
return this;
}
public Entry<K, V> next() {
if (index >= map.size)
throw new NoSuchElementException(String.valueOf(index));
if (!valid)
throw LSystem.runThrow("#iterator() cannot be used nested.");
entry.key = map.keys[index];
entry.value = map.values[index++];
return entry;
}
public void remove() {
index--;
map.removeIndex(index);
}
public void reset() {
index = 0;
}
}
static public class Values<V> implements Iterable<V>, Iterator<V> {
private final TArrayMap<Object, V> map;
int index;
boolean valid = true;
public Values(TArrayMap<Object, V> map) {
this.map = map;
}
public boolean hasNext() {
if (!valid)
throw LSystem.runThrow("#iterator() cannot be used nested.");
return index < map.size;
}
public Iterator<V> iterator() {
return this;
}
public V next() {
if (index >= map.size)
throw new NoSuchElementException(String.valueOf(index));
if (!valid)
throw LSystem.runThrow("#iterator() cannot be used nested.");
return map.values[index++];
}
public void remove() {
index--;
map.removeIndex(index);
}
public void reset() {
index = 0;
}
public TArray<V> toArray() {
return new TArray(true, map.values, index, map.size - index);
}
public TArray<V> toArray(TArray array) {
array.addAll(map.values, index, map.size - index);
return array;
}
}
static public class Keys<K> implements Iterable<K>, Iterator<K> {
private final TArrayMap<K, Object> map;
int index;
boolean valid = true;
public Keys(TArrayMap<K, Object> map) {
this.map = map;
}
public boolean hasNext() {
if (!valid)
throw LSystem.runThrow("#iterator() cannot be used nested.");
return index < map.size;
}
public Iterator<K> iterator() {
return this;
}
public K next() {
if (index >= map.size)
throw new NoSuchElementException(String.valueOf(index));
if (!valid)
throw LSystem.runThrow("#iterator() cannot be used nested.");
return map.keys[index++];
}
@Override
public void remove() {
index--;
map.removeIndex(index);
}
public void reset() {
index = 0;
}
public TArray<K> toArray() {
return new TArray(true, map.keys, index, map.size - index);
}
public TArray<K> toArray(TArray array) {
array.addAll(map.keys, index, map.size - index);
return array;
}
}
@Override
public int size() {
return size;
}
@Override
public boolean isEmpty() {
return size == 0 || keys == null || values == null;
}
}