/
KeySetImpl.java
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/
KeySetImpl.java
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package com.bgsoftware.superiorskyblock.key.dataset;
import com.bgsoftware.superiorskyblock.api.key.Key;
import com.bgsoftware.superiorskyblock.api.key.KeySet;
import com.bgsoftware.superiorskyblock.key.KeyImpl;
import org.jetbrains.annotations.NotNull;
import javax.annotation.Nullable;
import java.util.AbstractSet;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import java.util.function.Supplier;
import java.util.stream.Collectors;
public final class KeySetImpl extends AbstractSet<Key> implements KeySet {
private final Set<String> innerSet;
private Set<Key> innerReflectedSet;
public static KeySetImpl create(Supplier<Set<String>> setCreator, Collection<Key> keys) {
return new KeySetImpl(setCreator, keys.stream().map(Object::toString).collect(Collectors.toSet()));
}
public static KeySetImpl create(Supplier<Set<String>> setCreator) {
return new KeySetImpl(setCreator);
}
public static KeySetImpl createHashSet() {
return create(() -> new HashSet<>());
}
public static KeySetImpl createHashSet(Collection<Key> keys) {
return create(() -> new HashSet<>(), keys);
}
private KeySetImpl(Supplier<Set<String>> setCreator, Collection<String> keys) {
this(setCreator);
this.innerSet.addAll(keys);
}
private KeySetImpl(Supplier<Set<String>> setCreator) {
this.innerSet = setCreator.get();
}
@Override
@NotNull
public Iterator<Key> iterator() {
return asSet().iterator();
}
@Override
public int size() {
return innerSet.size();
}
@Override
public boolean contains(Object o) {
return o instanceof Key && (innerSet.contains(o.toString()) || (!((Key) o).getSubKey().isEmpty() && innerSet.contains(((Key) o).getGlobalKey())));
}
@Override
public boolean add(Key key) {
return innerSet.add(key.toString());
}
@Override
public boolean remove(Object o) {
return o instanceof Key ? innerSet.remove(o.toString()) : innerSet.remove(o);
}
@Override
public Key getKey(Key original) {
return getKey(original, null);
}
@Override
public Key getKey(Key original, @Nullable Key def) {
if (innerSet.contains(original.toString()))
return original;
else if (innerSet.contains(original.getGlobalKey()))
return KeyImpl.of(original.getGlobalKey(), "");
else
return def;
}
@Override
public Set<Key> asSet() {
return innerReflectedSet == null ? (innerReflectedSet = new InnerReflectedSet()) : innerReflectedSet;
}
private final class InnerReflectedSet implements Set<Key> {
@Override
public int size() {
return KeySetImpl.this.innerSet.size();
}
@Override
public boolean isEmpty() {
return KeySetImpl.this.innerSet.isEmpty();
}
@Override
public boolean contains(Object o) {
return KeySetImpl.this.innerSet.contains(o);
}
@NotNull
@Override
public Iterator<Key> iterator() {
return new SetIterator();
}
@Override
public Object @NotNull [] toArray() {
return KeySetImpl.this.innerSet.toArray();
}
@Override
public <T> T @NotNull [] toArray(T @NotNull [] a) {
return KeySetImpl.this.innerSet.toArray(a);
}
@Override
public boolean add(Key key) {
return KeySetImpl.this.innerSet.add(key.toString());
}
@Override
public boolean remove(Object o) {
return KeySetImpl.this.innerSet.remove(o);
}
@Override
public boolean containsAll(@NotNull Collection<?> c) {
return KeySetImpl.this.innerSet.containsAll(c);
}
@Override
public boolean addAll(@NotNull Collection<? extends Key> c) {
boolean added = false;
for (Key key : c) {
added |= add(key);
}
return added;
}
@Override
public boolean retainAll(@NotNull Collection<?> c) {
return KeySetImpl.this.innerSet.retainAll(c);
}
@Override
public boolean removeAll(@NotNull Collection<?> c) {
return KeySetImpl.this.innerSet.removeAll(c);
}
@Override
public void clear() {
KeySetImpl.this.innerSet.clear();
}
}
private final class SetIterator implements Iterator<Key> {
final Iterator<String> innerSetIterator = KeySetImpl.this.innerSet.iterator();
@Override
public boolean hasNext() {
return innerSetIterator.hasNext();
}
@Override
public Key next() {
return KeyImpl.of(innerSetIterator.next());
}
@Override
public void remove() {
innerSetIterator.remove();
}
}
}