/*
* This file is part of LanternServer, licensed under the MIT License (MIT).
*
* Copyright (c) LanternPowered <https://www.lanternpowered.org>
* Copyright (c) SpongePowered <https://www.spongepowered.org>
* Copyright (c) contributors
*
* 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.
*
* THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.lanternpowered.server.inventory;
import static com.google.common.base.Preconditions.checkNotNull;
import org.lanternpowered.server.game.Lantern;
import org.lanternpowered.server.util.collect.EmptyIterator;
import org.spongepowered.api.item.ItemType;
import org.spongepowered.api.item.inventory.EmptyInventory;
import org.spongepowered.api.item.inventory.Inventory;
import org.spongepowered.api.item.inventory.InventoryArchetype;
import org.spongepowered.api.item.inventory.InventoryProperty;
import org.spongepowered.api.item.inventory.ItemStack;
import org.spongepowered.api.item.inventory.transaction.InventoryTransactionResult;
import org.spongepowered.api.plugin.PluginContainer;
import org.spongepowered.api.text.translation.Translation;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.Optional;
import java.util.function.Predicate;
import javax.annotation.Nullable;
/**
* Bottom type / empty results set for inventory queries.
*/
class LanternEmptyInventory extends AbstractInventory implements EmptyInventory {
@Nullable private final AbstractInventory parent;
LanternEmptyInventory(@Nullable Inventory parent) {
this.parent = (AbstractInventory) parent;
}
@Override
protected LanternEmptyInventory empty() {
return this;
}
@Override
public AbstractInventory parent() {
return this.parent == null ? this : this.parent;
}
@Override
public <T extends Inventory> Iterable<T> slots() {
return Collections.emptyList();
}
@SuppressWarnings("unchecked")
@Override
public <T extends Inventory> T first() {
return (T) this;
}
@Override
public Optional<ItemStack> poll(Predicate<ItemStack> matcher) {
return Optional.empty();
}
@Override
public Optional<ItemStack> poll(int limit, Predicate<ItemStack> matcher) {
return Optional.empty();
}
@Override
public Optional<ItemStack> peek(Predicate<ItemStack> matcher) {
return Optional.empty();
}
@Override
public Optional<PeekPollTransactionsResult> peekPollTransactions(Predicate<ItemStack> matcher) {
return Optional.empty();
}
@Override
public Optional<ItemStack> peek(int limit, Predicate<ItemStack> matcher) {
return Optional.empty();
}
@Override
public Optional<PeekPollTransactionsResult> peekPollTransactions(int limit, Predicate<ItemStack> matcher) {
return Optional.empty();
}
@Override
public PeekSetTransactionsResult peekSetTransactions(@Nullable ItemStack stack) {
return new PeekSetTransactionsResult(new ArrayList<>(), InventoryTransactionResult.builder()
.type(InventoryTransactionResult.Type.FAILURE).reject(stack).build());
}
@SuppressWarnings("unchecked")
@Override
public <T extends Inventory> T query(Predicate<Inventory> matcher, boolean nested) {
return (T) this;
}
@Override
public boolean isValidItem(ItemStack stack) {
return false;
}
@Override
public boolean isChild(Inventory child) {
return false;
}
@Override
public int slotCount() {
return 0;
}
@Override
public void add(ContainerViewListener listener) {
}
@Override
public void clear() {
}
@Override
public int size() {
return 0;
}
@Override
public int totalItems() {
return 0;
}
@Override
public int capacity() {
return 0;
}
@Override
public boolean hasChildren() {
return false;
}
@Override
public boolean contains(ItemStack stack) {
return false;
}
@Override
public boolean contains(ItemType type) {
return false;
}
@Override
public int getMaxStackSize() {
return 0;
}
@Override
public void setMaxStackSize(int size) {
}
@SuppressWarnings("unchecked")
@Override
public <T extends Inventory> T query(Class<?>... types) {
return (T) this;
}
@SuppressWarnings("unchecked")
@Override
public <T extends Inventory> T query(ItemType... types) {
return (T) this;
}
@SuppressWarnings("unchecked")
@Override
public <T extends Inventory> T query(ItemStack... types) {
return (T) this;
}
@SuppressWarnings("unchecked")
@Override
public <T extends Inventory> T query(InventoryProperty<?, ?>... props) {
return (T) this;
}
@SuppressWarnings("unchecked")
@Override
public <T extends Inventory> T query(Translation... names) {
return (T) this;
}
@SuppressWarnings("unchecked")
@Override
public <T extends Inventory> T query(String... names) {
return (T) this;
}
@SuppressWarnings("unchecked")
@Override
public <T extends Inventory> T query(Object... args) {
return (T) this;
}
@Override
public PluginContainer getPlugin() {
return Lantern.getMinecraftPlugin();
}
@Override
public InventoryArchetype getArchetype() {
return LanternInventoryArchetypes.EMPTY;
}
@Override
public Iterator<Inventory> iterator() {
return EmptyIterator.get();
}
@SuppressWarnings("unchecked")
@Override
public <T extends Inventory> T next() {
return (T) this;
}
@Override
public Optional<ItemStack> poll() {
return Optional.empty();
}
@Override
public Optional<ItemStack> poll(int limit) {
return Optional.empty();
}
@Override
public Optional<ItemStack> peek() {
return Optional.empty();
}
@Override
public Optional<ItemStack> peek(int limit) {
return Optional.empty();
}
@Override
public boolean hasProperty(InventoryProperty<?, ?> property) {
return false;
}
@Override
public boolean hasProperty(Inventory child, InventoryProperty<?, ?> property) {
return false;
}
@Override
public FastOfferResult offerFast(ItemStack stack) {
return new FastOfferResult(checkNotNull(stack, "stack"), false);
}
@Override
public PeekOfferTransactionsResult peekOfferFastTransactions(ItemStack stack) {
return new PeekOfferTransactionsResult(new ArrayList<>(), new FastOfferResult(checkNotNull(stack, "stack"), false));
}
@Override
public InventoryTransactionResult offer(ItemStack stack) {
return InventoryTransactionResult.builder().type(InventoryTransactionResult.Type.FAILURE).reject(stack).build();
}
@Override
public InventoryTransactionResult set(ItemStack stack) {
return InventoryTransactionResult.builder().type(InventoryTransactionResult.Type.FAILURE).reject(stack).build();
}
@Override
public Translation getName() {
return AbstractMutableInventory.NameHolder.EMPTY;
}
}