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StackHelper.java
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StackHelper.java
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package mezz.jei.startup;
import javax.annotation.Nullable;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.EnumMap;
import java.util.HashMap;
import java.util.IdentityHashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.SortedSet;
import java.util.TreeSet;
import mezz.jei.api.ISubtypeRegistry;
import mezz.jei.api.gui.IGuiIngredient;
import mezz.jei.api.recipe.IStackHelper;
import mezz.jei.util.ErrorUtil;
import mezz.jei.util.Log;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.item.crafting.Ingredient;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.util.NonNullList;
import net.minecraft.util.ResourceLocation;
import net.minecraftforge.oredict.OreDictionary;
public class StackHelper implements IStackHelper {
private final ISubtypeRegistry subtypeRegistry;
/**
* Uids are cached during loading to improve startup performance.
*/
private final Map<UidMode, Map<ItemStack, String>> uidCache = new EnumMap<>(UidMode.class);
private boolean uidCacheEnabled = true;
public StackHelper(ISubtypeRegistry subtypeRegistry) {
this.subtypeRegistry = subtypeRegistry;
for (UidMode mode : UidMode.values()) {
uidCache.put(mode, new IdentityHashMap<>());
}
}
public void enableUidCache() {
uidCacheEnabled = true;
}
public void disableUidCache() {
for (UidMode mode : UidMode.values()) {
uidCache.get(mode).clear();
}
uidCacheEnabled = false;
}
@Nullable
public String getOreDictEquivalent(Collection<ItemStack> itemStacks) {
if (itemStacks.size() < 2) {
return null;
}
final ItemStack firstStack = itemStacks.iterator().next();
if (firstStack != null) {
for (final int oreId : OreDictionary.getOreIDs(firstStack)) {
final String oreName = OreDictionary.getOreName(oreId);
List<ItemStack> ores = OreDictionary.getOres(oreName);
ores = getAllSubtypes(ores);
if (containsSameStacks(itemStacks, ores)) {
return oreName;
}
}
}
return null;
}
/**
* Returns a list of items in slots that complete the recipe defined by requiredStacksList.
* Returns a result that contains missingItems if there are not enough items in availableItemStacks.
*/
public MatchingItemsResult getMatchingItems(Map<Integer, ItemStack> availableItemStacks, Map<Integer, ? extends IGuiIngredient<ItemStack>> ingredientsMap) {
MatchingItemsResult matchingItemResult = new MatchingItemsResult();
int recipeSlotNumber = -1;
SortedSet<Integer> keys = new TreeSet<>(ingredientsMap.keySet());
for (Integer key : keys) {
IGuiIngredient<ItemStack> ingredient = ingredientsMap.get(key);
if (!ingredient.isInput()) {
continue;
}
recipeSlotNumber++;
List<ItemStack> requiredStacks = ingredient.getAllIngredients();
if (requiredStacks.isEmpty()) {
continue;
}
Integer matching = containsAnyStackIndexed(availableItemStacks, requiredStacks);
if (matching == null) {
matchingItemResult.missingItems.add(key);
} else {
ItemStack matchingStack = availableItemStacks.get(matching);
matchingStack.shrink(1);
if (matchingStack.getCount() == 0) {
availableItemStacks.remove(matching);
}
matchingItemResult.matchingItems.put(recipeSlotNumber, matching);
}
}
return matchingItemResult;
}
public boolean containsSameStacks(Collection<ItemStack> stacks, Collection<ItemStack> contains) {
return containsSameStacks(new MatchingIterable(stacks), new MatchingIterable(contains));
}
/**
* Returns true if all stacks from "contains" are found in "stacks" and the opposite is true as well.
*/
public <R> boolean containsSameStacks(Iterable<ItemStackMatchable<R>> stacks, Iterable<ItemStackMatchable<R>> contains) {
for (ItemStackMatchable stack : contains) {
if (containsStack(stacks, stack) == null) {
return false;
}
}
for (ItemStackMatchable stack : stacks) {
if (containsStack(contains, stack) == null) {
return false;
}
}
return true;
}
@Nullable
public Integer containsAnyStackIndexed(Map<Integer, ItemStack> stacks, Iterable<ItemStack> contains) {
MatchingIndexed matchingStacks = new MatchingIndexed(stacks);
MatchingIterable matchingContains = new MatchingIterable(contains);
return containsStackMatchable(matchingStacks, matchingContains);
}
@Nullable
public ItemStack containsStack(Iterable<ItemStack> stacks, ItemStack contains) {
List<ItemStack> containsList = Collections.singletonList(contains);
return containsAnyStack(stacks, containsList);
}
@Override
@Nullable
public ItemStack containsAnyStack(Iterable<ItemStack> stacks, Iterable<ItemStack> contains) {
ErrorUtil.checkNotNull(stacks, "stacks");
ErrorUtil.checkNotNull(contains, "contains");
MatchingIterable matchingStacks = new MatchingIterable(stacks);
MatchingIterable matchingContains = new MatchingIterable(contains);
return containsStackMatchable(matchingStacks, matchingContains);
}
/* Returns an ItemStack from "stacks" if it isEquivalent to an ItemStack from "contains" */
@Nullable
public <R, T> R containsStackMatchable(Iterable<ItemStackMatchable<R>> stacks, Iterable<ItemStackMatchable<T>> contains) {
for (ItemStackMatchable<?> containStack : contains) {
R matchingStack = containsStack(stacks, containStack);
if (matchingStack != null) {
return matchingStack;
}
}
return null;
}
/* Returns an ItemStack from "stacks" if it isEquivalent to "contains" */
@Nullable
public <R> R containsStack(Iterable<ItemStackMatchable<R>> stacks, ItemStackMatchable<?> contains) {
for (ItemStackMatchable<R> stack : stacks) {
if (isEquivalent(contains.getStack(), stack.getStack())) {
return stack.getResult();
}
}
return null;
}
/**
* Similar to ItemStack.areItemStacksEqual but ignores NBT on items without subtypes, and uses the {@link ISubtypeRegistry}
*/
@Override
public boolean isEquivalent(@Nullable ItemStack lhs, @Nullable ItemStack rhs) {
if (lhs == rhs) {
return true;
}
if (lhs == null || rhs == null) {
return false;
}
if (lhs.getItem() != rhs.getItem()) {
return false;
}
String keyLhs = getUniqueIdentifierForStack(lhs, UidMode.NORMAL);
String keyRhs = getUniqueIdentifierForStack(rhs, UidMode.NORMAL);
return keyLhs.equals(keyRhs);
}
@Override
public List<ItemStack> getSubtypes(@Nullable ItemStack itemStack) {
if (itemStack == null) {
return Collections.emptyList();
}
if (itemStack.isEmpty()) {
return Collections.emptyList();
}
if (itemStack.getItemDamage() != OreDictionary.WILDCARD_VALUE) {
List<ItemStack> subtypes = new ArrayList<>();
subtypes.add(itemStack);
return subtypes;
}
return getSubtypes(itemStack.getItem(), itemStack.getCount());
}
public NonNullList<ItemStack> getSubtypes(final Item item, final int stackSize) {
NonNullList<ItemStack> itemStacks = NonNullList.create();
for (CreativeTabs itemTab : item.getCreativeTabs()) {
if (itemTab == null) {
continue;
}
NonNullList<ItemStack> subItems = NonNullList.create();
try {
item.getSubItems(itemTab, subItems);
} catch (RuntimeException | LinkageError e) {
Log.get().warn("Caught a crash while getting sub-items of {}", item, e);
}
for (ItemStack subItem : subItems) {
if (subItem.isEmpty()) {
Log.get().warn("Found an empty subItem of {}", item);
} else {
if (subItem.getCount() != stackSize) {
ItemStack subItemCopy = subItem.copy();
subItemCopy.setCount(stackSize);
itemStacks.add(subItemCopy);
} else {
itemStacks.add(subItem);
}
}
}
}
return itemStacks;
}
@Override
public List<ItemStack> getAllSubtypes(@Nullable Iterable stacks) {
if (stacks == null) {
return Collections.emptyList();
}
List<ItemStack> allSubtypes = new ArrayList<>();
getAllSubtypes(allSubtypes, stacks);
if (isAllNulls(allSubtypes)) {
return Collections.emptyList();
}
return allSubtypes;
}
private static boolean isAllNulls(Iterable<?> iterable) {
for (Object element : iterable) {
if (element != null) {
return false;
}
}
return true;
}
private void getAllSubtypes(List<ItemStack> subtypesList, Iterable stacks) {
for (Object obj : stacks) {
if (obj instanceof ItemStack) {
ItemStack itemStack = (ItemStack) obj;
List<ItemStack> subtypes = getSubtypes(itemStack);
subtypesList.addAll(subtypes);
} else if (obj instanceof Iterable) {
getAllSubtypes(subtypesList, (Iterable) obj);
} else if (obj != null) {
Log.get().error("Unknown object found: {}", obj);
} else {
subtypesList.add(null);
}
}
}
@Override
public List<List<ItemStack>> expandRecipeItemStackInputs(@Nullable List inputs) {
if (inputs == null) {
return Collections.emptyList();
}
return expandRecipeItemStackInputs(inputs, true);
}
public List<List<ItemStack>> expandRecipeItemStackInputs(List inputs, boolean expandSubtypes) {
List<List<ItemStack>> expandedInputs = new ArrayList<>();
for (Object input : inputs) {
List<ItemStack> expandedInput = toItemStackList(input, expandSubtypes);
expandedInputs.add(expandedInput);
}
return expandedInputs;
}
@Override
public NonNullList<ItemStack> toItemStackList(@Nullable Object stacks) {
if (stacks == null) {
return NonNullList.create();
}
return toItemStackList(stacks, true);
}
public NonNullList<ItemStack> toItemStackList(Object stacks, boolean expandSubtypes) {
UniqueItemStackListBuilder itemStackListBuilder = new UniqueItemStackListBuilder(this);
toItemStackList(itemStackListBuilder, stacks, expandSubtypes);
return itemStackListBuilder.build();
}
private void toItemStackList(UniqueItemStackListBuilder itemStackListBuilder, @Nullable Object input, boolean expandSubtypes) {
if (input instanceof ItemStack) {
ItemStack stack = (ItemStack) input;
if (expandSubtypes && stack.getMetadata() == OreDictionary.WILDCARD_VALUE) {
List<ItemStack> subtypes = getSubtypes(stack);
for (ItemStack subtype : subtypes) {
itemStackListBuilder.add(subtype);
}
} else {
itemStackListBuilder.add(stack);
}
} else if (input instanceof Ingredient) {
List<ItemStack> stacks = Arrays.asList(((Ingredient) input).func_193365_a());
toItemStackList(itemStackListBuilder, stacks, expandSubtypes);
} else if (input instanceof Iterable) {
for (Object obj : (Iterable) input) {
toItemStackList(itemStackListBuilder, obj, expandSubtypes);
}
} else if (input != null) {
Log.get().error("Unknown object found: {}", input);
}
}
public String getUniqueIdentifierForStack(ItemStack stack) {
return getUniqueIdentifierForStack(stack, UidMode.NORMAL);
}
public String getUniqueIdentifierForStack(ItemStack stack, UidMode mode) {
ErrorUtil.checkNotEmpty(stack);
if (uidCacheEnabled) {
String result = uidCache.get(mode).get(stack);
if (result != null) {
return result;
}
}
Item item = stack.getItem();
ResourceLocation itemName = item.getRegistryName();
if (itemName == null) {
String stackInfo = ErrorUtil.getItemStackInfo(stack);
throw new IllegalStateException("Item has no registry name: " + stackInfo);
}
StringBuilder itemKey = new StringBuilder(itemName.toString());
int metadata = stack.getMetadata();
if (mode != UidMode.WILDCARD && metadata != OreDictionary.WILDCARD_VALUE) {
String subtypeInfo = subtypeRegistry.getSubtypeInfo(stack);
if (subtypeInfo != null) {
itemKey.append(':').append(subtypeInfo);
} else {
if (mode == UidMode.FULL) {
itemKey.append(':').append(metadata);
NBTTagCompound serializedNbt = stack.serializeNBT();
NBTTagCompound nbtTagCompound = serializedNbt.getCompoundTag("tag").copy();
if (serializedNbt.hasKey("ForgeCaps")) {
NBTTagCompound forgeCaps = serializedNbt.getCompoundTag("ForgeCaps");
if (!forgeCaps.hasNoTags()) { // ForgeCaps should never be empty
nbtTagCompound.setTag("ForgeCaps", forgeCaps);
}
}
if (!nbtTagCompound.hasNoTags()) {
itemKey.append(':').append(nbtTagCompound);
}
} else if (stack.getHasSubtypes()) {
itemKey.append(':').append(metadata);
}
}
}
String result = itemKey.toString();
if (uidCacheEnabled) {
uidCache.get(mode).put(stack, result);
}
return result;
}
public enum UidMode {
NORMAL, WILDCARD, FULL
}
public static class MatchingItemsResult {
public final Map<Integer, Integer> matchingItems = new HashMap<>();
public final List<Integer> missingItems = new ArrayList<>();
}
private interface ItemStackMatchable<R> {
@Nullable
ItemStack getStack();
@Nullable
R getResult();
}
private static abstract class DelegateIterator<T, R> implements Iterator<R> {
protected final Iterator<T> delegate;
public DelegateIterator(Iterator<T> delegate) {
this.delegate = delegate;
}
@Override
public boolean hasNext() {
return delegate.hasNext();
}
@Override
public void remove() {
delegate.remove();
}
}
private static class MatchingIterable implements Iterable<ItemStackMatchable<ItemStack>> {
private final Iterable<ItemStack> list;
public MatchingIterable(Iterable<ItemStack> list) {
this.list = list;
}
@Override
public Iterator<ItemStackMatchable<ItemStack>> iterator() {
Iterator<ItemStack> stacks = list.iterator();
return new DelegateIterator<ItemStack, ItemStackMatchable<ItemStack>>(stacks) {
@Override
public ItemStackMatchable<ItemStack> next() {
final ItemStack stack = delegate.next();
return new ItemStackMatchable<ItemStack>() {
@Nullable
@Override
public ItemStack getStack() {
return stack;
}
@Nullable
@Override
public ItemStack getResult() {
return stack;
}
};
}
};
}
}
private static class MatchingIndexed implements Iterable<ItemStackMatchable<Integer>> {
private final Map<Integer, ItemStack> map;
public MatchingIndexed(Map<Integer, ItemStack> map) {
this.map = map;
}
@Override
public Iterator<ItemStackMatchable<Integer>> iterator() {
return new DelegateIterator<Map.Entry<Integer, ItemStack>, ItemStackMatchable<Integer>>(map.entrySet().iterator()) {
@Override
public ItemStackMatchable<Integer> next() {
final Map.Entry<Integer, ItemStack> entry = delegate.next();
return new ItemStackMatchable<Integer>() {
@Override
public ItemStack getStack() {
return entry.getValue();
}
@Override
public Integer getResult() {
return entry.getKey();
}
};
}
};
}
}
}