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Paper/Spigot-Server-Patches/0075-Handle-Item-Meta-Inconsistencies.patch
Aikar 18c3716c49
Current Chunk for Entity and Block Entities, counts by entity type 
This enables us a fast reference to the entities current chunk instead
of having to look it up by hashmap lookups.

We also store counts by type to further enable other performance optimizations in later patches.
2018-07-04 03:58:56 -04:00

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From 841254f7471189b0be7020ad4f65eea1c697d2c1 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 28 May 2015 23:00:19 -0400
Subject: [PATCH] Handle Item Meta Inconsistencies
First, Enchantment order would blow away seeing 2 items as the same,
however the Client forces enchantment list in a certain order, as well
as does the /enchant command. Anvils can insert it into forced order,
causing 2 same items to be considered different.
This change makes unhandled NBT Tags and Enchantments use a sorted tree map,
so they will always be in a consistent order.
Additionally, the old enchantment API was never updated when ItemMeta
was added, resulting in 2 different ways to modify an items enchantments.
For consistency, the old API methods now forward to use the
ItemMeta API equivalents, and should deprecate the old API's.
diff --git a/src/main/java/net/minecraft/server/ItemStack.java b/src/main/java/net/minecraft/server/ItemStack.java
index 82d72ea15..5047a57e9 100644
--- a/src/main/java/net/minecraft/server/ItemStack.java
+++ b/src/main/java/net/minecraft/server/ItemStack.java
@@ -57,6 +57,22 @@ public final class ItemStack {
}
// CraftBukkit start
+ // Paper start
+ private static final java.util.Comparator<NBTTagCompound> enchantSorter = java.util.Comparator.comparingInt(o -> o.getShort("id"));
+ private void processEnchantOrder(NBTTagCompound tag) {
+ if (tag == null || !tag.hasKeyOfType("ench", 9)) {
+ return;
+ }
+ NBTTagList list = tag.getList("ench", 10);
+ if (list.size() < 2) {
+ return;
+ }
+ try {
+ list.sort(enchantSorter); // Paper
+ } catch (Exception ignored) {}
+ }
+ // Paper end
+
public ItemStack(Item item, int i, int j) {
this(item, i, j, true);
}
@@ -114,6 +130,7 @@ public final class ItemStack {
if (nbttagcompound.hasKeyOfType("tag", 10)) {
// CraftBukkit start - make defensive copy as this data may be coming from the save thread
this.tag = (NBTTagCompound) nbttagcompound.getCompound("tag").clone();
+ processEnchantOrder(this.tag); // Paper
if (this.item != null) {
this.item.a(this.tag);
// CraftBukkit end
@@ -597,6 +614,7 @@ public final class ItemStack {
// Paper end
public void setTag(@Nullable NBTTagCompound nbttagcompound) {
this.tag = nbttagcompound;
+ processEnchantOrder(this.tag); // Paper
}
public String getName() {
@@ -670,6 +688,7 @@ public final class ItemStack {
nbttagcompound.setShort("id", (short) Enchantment.getId(enchantment));
nbttagcompound.setShort("lvl", (short) ((byte) i));
nbttaglist.add(nbttagcompound);
+ processEnchantOrder(nbttagcompound); // Paper
}
public boolean hasEnchantments() {
diff --git a/src/main/java/net/minecraft/server/NBTTagList.java b/src/main/java/net/minecraft/server/NBTTagList.java
index ca9eb2f3b..576c3b714 100644
--- a/src/main/java/net/minecraft/server/NBTTagList.java
+++ b/src/main/java/net/minecraft/server/NBTTagList.java
@@ -14,6 +14,12 @@ public class NBTTagList extends NBTBase {
private static final Logger b = LogManager.getLogger();
public List<NBTBase> list = Lists.newArrayList(); // Paper
+ // Paper start
+ public void sort(java.util.Comparator<? extends NBTBase> comparator) {
+ //noinspection unchecked
+ java.util.Collections.sort(list, (java.util.Comparator<NBTBase>) comparator);
+ }
+ // Paper end
private byte type = 0;
public NBTTagList() {}
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
index fb1dc542d..cdf16e15a 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
@@ -4,6 +4,7 @@ import static org.bukkit.craftbukkit.inventory.CraftMetaItem.ENCHANTMENTS;
import static org.bukkit.craftbukkit.inventory.CraftMetaItem.ENCHANTMENTS_ID;
import static org.bukkit.craftbukkit.inventory.CraftMetaItem.ENCHANTMENTS_LVL;
+import java.util.Iterator;
import java.util.Map;
import net.minecraft.server.EnchantmentManager;
@@ -183,28 +184,11 @@ public final class CraftItemStack extends ItemStack {
public void addUnsafeEnchantment(Enchantment ench, int level) {
Validate.notNull(ench, "Cannot add null enchantment");
- if (!makeTag(handle)) {
- return;
- }
- NBTTagList list = getEnchantmentList(handle);
- if (list == null) {
- list = new NBTTagList();
- handle.getTag().set(ENCHANTMENTS.NBT, list);
- }
- int size = list.size();
-
- for (int i = 0; i < size; i++) {
- NBTTagCompound tag = (NBTTagCompound) list.get(i);
- short id = tag.getShort(ENCHANTMENTS_ID.NBT);
- if (id == ench.getId()) {
- tag.setShort(ENCHANTMENTS_LVL.NBT, (short) level);
- return;
- }
- }
- NBTTagCompound tag = new NBTTagCompound();
- tag.setShort(ENCHANTMENTS_ID.NBT, (short) ench.getId());
- tag.setShort(ENCHANTMENTS_LVL.NBT, (short) level);
- list.add(tag);
+ // Paper start - Replace whole method
+ final ItemMeta itemMeta = getItemMeta();
+ itemMeta.addEnchant(ench, level, true);
+ setItemMeta(itemMeta);
+ // Paper end
}
static boolean makeTag(net.minecraft.server.ItemStack item) {
@@ -221,66 +205,34 @@ public final class CraftItemStack extends ItemStack {
@Override
public boolean containsEnchantment(Enchantment ench) {
- return getEnchantmentLevel(ench) > 0;
+ return hasItemMeta() && getItemMeta().hasEnchant(ench); // Paper - use meta
}
@Override
public int getEnchantmentLevel(Enchantment ench) {
- Validate.notNull(ench, "Cannot find null enchantment");
- if (handle == null) {
- return 0;
- }
- return EnchantmentManager.getEnchantmentLevel(CraftEnchantment.getRaw(ench), handle);
+ return hasItemMeta() ? getItemMeta().getEnchantLevel(ench) : 0; // Pape - replace entire method with meta
}
@Override
public int removeEnchantment(Enchantment ench) {
Validate.notNull(ench, "Cannot remove null enchantment");
-
- NBTTagList list = getEnchantmentList(handle), listCopy;
- if (list == null) {
- return 0;
- }
- int index = Integer.MIN_VALUE;
- int level = Integer.MIN_VALUE;
- int size = list.size();
-
- for (int i = 0; i < size; i++) {
- NBTTagCompound enchantment = (NBTTagCompound) list.get(i);
- int id = 0xffff & enchantment.getShort(ENCHANTMENTS_ID.NBT);
- if (id == ench.getId()) {
- index = i;
- level = 0xffff & enchantment.getShort(ENCHANTMENTS_LVL.NBT);
- break;
- }
- }
-
- if (index == Integer.MIN_VALUE) {
- return 0;
- }
- if (size == 1) {
- handle.getTag().remove(ENCHANTMENTS.NBT);
- if (handle.getTag().isEmpty()) {
- handle.setTag(null);
+ // Paper start - replace entire method, maintain backwards compat of returning previous level.
+ final ItemMeta itemMeta = getItemMeta();
+ final Iterator<Enchantment> iterator = itemMeta.getEnchants().keySet().iterator();
+ for (int i = 0; iterator.hasNext(); i++) {
+ if (iterator.next().equals(ench)) {
+ itemMeta.removeEnchant(ench);
+ setItemMeta(itemMeta);
+ return i;
}
- return level;
}
-
- // This is workaround for not having an index removal
- listCopy = new NBTTagList();
- for (int i = 0; i < size; i++) {
- if (i != index) {
- listCopy.add(list.get(i));
- }
- }
- handle.getTag().set(ENCHANTMENTS.NBT, listCopy);
-
- return level;
+ // Paper end
+ return 0;
}
@Override
public Map<Enchantment, Integer> getEnchantments() {
- return getEnchantments(handle);
+ return hasItemMeta() ? getItemMeta().getEnchants() : ImmutableMap.<Enchantment, Integer>of(); // Paper - use Item Meta
}
static Map<Enchantment, Integer> getEnchantments(net.minecraft.server.ItemStack item) {
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
index c743ae066..0cdc8007a 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
@@ -6,13 +6,8 @@ import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.NoSuchElementException;
+import com.google.common.collect.ImmutableSortedMap;
import net.minecraft.server.NBTBase;
import net.minecraft.server.NBTTagCompound;
import net.minecraft.server.NBTTagList;
@@ -38,10 +33,18 @@ import com.google.common.collect.Sets;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
+import java.util.ArrayList;
import java.util.Arrays;
+import java.util.Collection;
+import java.util.Comparator;
import java.util.EnumSet;
+import java.util.HashMap;
import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.NoSuchElementException;
import java.util.Set;
+import java.util.TreeMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import net.minecraft.server.NBTCompressedStreamTools;
@@ -226,7 +229,7 @@ class CraftMetaItem implements ItemMeta, Repairable {
private String displayName;
private String locName;
private List<String> lore;
- private Map<Enchantment, Integer> enchantments;
+ private EnchantmentMap enchantments; // Paper
private int repairCost;
private int hideFlag;
private boolean unbreakable;
@@ -234,7 +237,7 @@ class CraftMetaItem implements ItemMeta, Repairable {
private static final Set<String> HANDLED_TAGS = Sets.newHashSet();
private NBTTagCompound internalTag;
- private final Map<String, NBTBase> unhandledTags = new HashMap<String, NBTBase>();
+ private final Map<String, NBTBase> unhandledTags = new TreeMap<>(); // Paper
CraftMetaItem(CraftMetaItem meta) {
if (meta == null) {
@@ -249,7 +252,7 @@ class CraftMetaItem implements ItemMeta, Repairable {
}
if (meta.enchantments != null) { // Spigot
- this.enchantments = new HashMap<Enchantment, Integer>(meta.enchantments);
+ this.enchantments = new EnchantmentMap(meta.enchantments); // Paper
}
this.repairCost = meta.repairCost;
@@ -470,13 +473,13 @@ class CraftMetaItem implements ItemMeta, Repairable {
}
}
- static Map<Enchantment, Integer> buildEnchantments(NBTTagCompound tag, ItemMetaKey key) {
+ static EnchantmentMap buildEnchantments(NBTTagCompound tag, ItemMetaKey key) { // Paper
if (!tag.hasKey(key.NBT)) {
return null;
}
NBTTagList ench = tag.getList(key.NBT, CraftMagicNumbers.NBT.TAG_COMPOUND);
- Map<Enchantment, Integer> enchantments = new HashMap<Enchantment, Integer>(ench.size());
+ EnchantmentMap enchantments = new EnchantmentMap(); // Paper
for (int i = 0; i < ench.size(); i++) {
int id = 0xffff & ((NBTTagCompound) ench.get(i)).getShort(ENCHANTMENTS_ID.NBT);
@@ -546,13 +549,13 @@ class CraftMetaItem implements ItemMeta, Repairable {
void deserializeInternal(NBTTagCompound tag) {
}
- static Map<Enchantment, Integer> buildEnchantments(Map<String, Object> map, ItemMetaKey key) {
+ static EnchantmentMap buildEnchantments(Map<String, Object> map, ItemMetaKey key) { // Paper
Map<?, ?> ench = SerializableMeta.getObject(Map.class, map, key.BUKKIT, true);
if (ench == null) {
return null;
}
- Map<Enchantment, Integer> enchantments = new HashMap<Enchantment, Integer>(ench.size());
+ EnchantmentMap enchantments = new EnchantmentMap(); // Paper
for (Map.Entry<?, ?> entry : ench.entrySet()) {
// Doctor older enchants
String enchantKey = entry.getKey().toString();
@@ -703,13 +706,13 @@ class CraftMetaItem implements ItemMeta, Repairable {
}
public Map<Enchantment, Integer> getEnchants() {
- return hasEnchants() ? ImmutableMap.copyOf(enchantments) : ImmutableMap.<Enchantment, Integer>of();
+ return hasEnchants() ? ImmutableSortedMap.copyOfSorted(enchantments) : ImmutableMap.<Enchantment, Integer>of(); // Paper
}
public boolean addEnchant(Enchantment ench, int level, boolean ignoreRestrictions) {
Validate.notNull(ench, "Enchantment cannot be null");
if (enchantments == null) {
- enchantments = new HashMap<Enchantment, Integer>(4);
+ enchantments = new EnchantmentMap(); // Paper
}
if (ignoreRestrictions || level >= ench.getStartLevel() && level <= ench.getMaxLevel()) {
@@ -880,7 +883,7 @@ class CraftMetaItem implements ItemMeta, Repairable {
clone.lore = new ArrayList<String>(this.lore);
}
if (this.enchantments != null) {
- clone.enchantments = new HashMap<Enchantment, Integer>(this.enchantments);
+ clone.enchantments = new EnchantmentMap(this.enchantments); // Paper
}
clone.hideFlag = this.hideFlag;
clone.unbreakable = this.unbreakable;
@@ -1038,6 +1041,23 @@ class CraftMetaItem implements ItemMeta, Repairable {
}
}
+ // Paper start
+ private static class EnchantmentMap extends TreeMap<Enchantment, Integer> {
+ private EnchantmentMap(Map<Enchantment, Integer> enchantments) {
+ this();
+ putAll(enchantments);
+ }
+
+ private EnchantmentMap() {
+ super((o1, o2) -> ((Integer) o1.getId()).compareTo(o2.getId()));
+ }
+
+ public EnchantmentMap clone() {
+ return (EnchantmentMap) super.clone();
+ }
+ }
+ // Paper end
+
// Spigot start
private final Spigot spigot = new Spigot()
{
--
2.18.0
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