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Paper/patches/api/0478-Proxy-ItemStack-to-CraftItemStack.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Tue, 14 May 2024 11:57:51 -0700
Subject: [PATCH] Proxy ItemStack to CraftItemStack
diff --git a/src/main/java/org/bukkit/UnsafeValues.java b/src/main/java/org/bukkit/UnsafeValues.java
index 7332034bb1753f48f7904dafab1ef4b3ee117ea3..11bccf6c27b8b2a2ed558a1375a3b3adc7952076 100644
--- a/src/main/java/org/bukkit/UnsafeValues.java
+++ b/src/main/java/org/bukkit/UnsafeValues.java
@@ -277,4 +277,6 @@ public interface UnsafeValues {
@NotNull java.util.List<net.kyori.adventure.text.Component> computeTooltipLines(@NotNull ItemStack itemStack, @NotNull io.papermc.paper.inventory.tooltip.TooltipContext tooltipContext, @Nullable org.bukkit.entity.Player player); // Paper - expose itemstack tooltip lines
<A extends Keyed, M> io.papermc.paper.registry.tag.@Nullable Tag<A> getTag(io.papermc.paper.registry.tag.@NotNull TagKey<A> tagKey); // Paper - hack to get tags for non-server backed registries
+
+ ItemStack createEmptyStack(); // Paper - proxy ItemStack
}
diff --git a/src/main/java/org/bukkit/inventory/ItemStack.java b/src/main/java/org/bukkit/inventory/ItemStack.java
index 7f5633e7689b82b937d5b985c3e6ae15dc94a20f..2b414b01f80f9c683381c92deb1fca2ec15be2c7 100644
--- a/src/main/java/org/bukkit/inventory/ItemStack.java
+++ b/src/main/java/org/bukkit/inventory/ItemStack.java
@@ -28,10 +28,38 @@ import org.jetbrains.annotations.Nullable;
* returns false.</b>
*/
public class ItemStack implements Cloneable, ConfigurationSerializable, Translatable, net.kyori.adventure.text.event.HoverEventSource<net.kyori.adventure.text.event.HoverEvent.ShowItem>, net.kyori.adventure.translation.Translatable { // Paper
- private Material type = Material.AIR;
- private int amount = 0;
+ private ItemStack craftDelegate; // Paper - always delegate to server-backed stack
private MaterialData data = null;
- private ItemMeta meta;
+
+ // Paper start - add static factory methods
+ /**
+ * Creates an itemstack with the specified item type and a count of 1.
+ *
+ * @param type the item type to use
+ * @return a new itemstack
+ * @throws IllegalArgumentException if the Material provided is not an item ({@link Material#isItem()})
+ */
+ @org.jetbrains.annotations.Contract(value = "_ -> new", pure = true)
+ public static @NotNull ItemStack of(final @NotNull Material type) {
+ return of(type, 1);
+ }
+
+ /**
+ * Creates an itemstack with the specified item type and count.
+ *
+ * @param type the item type to use
+ * @param amount the count of items in the stack
+ * @return a new itemstack
+ * @throws IllegalArgumentException if the Material provided is not an item ({@link Material#isItem()})
+ * @throws IllegalArgumentException if the amount is less than 1
+ */
+ @org.jetbrains.annotations.Contract(value = "_, _ -> new", pure = true)
+ public static @NotNull ItemStack of(final @NotNull Material type, final int amount) {
+ Preconditions.checkArgument(type.asItemType() != null, type + " isn't an item");
+ Preconditions.checkArgument(amount > 0, "amount must be greater than 0");
+ return java.util.Objects.requireNonNull(type.asItemType(), type + " is not an item").createItemStack(amount); // Paper - delegate
+ }
+ // Paper end
@Utility
protected ItemStack() {}
@@ -44,7 +72,10 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
* {@link Material#isItem()} returns false.</b>
*
* @param type item material
+ * @apiNote use {@link #of(Material)}
+ * @see #of(Material)
*/
+ @org.jetbrains.annotations.ApiStatus.Obsolete(since = "1.21") // Paper
public ItemStack(@NotNull final Material type) {
this(type, 1);
}
@@ -58,7 +89,10 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
*
* @param type item material
* @param amount stack size
+ * @apiNote Use {@link #of(Material, int)}
+ * @see #of(Material, int)
*/
+ @org.jetbrains.annotations.ApiStatus.Obsolete(since = "1.21") // Paper
public ItemStack(@NotNull final Material type, final int amount) {
this(type, amount, (short) 0);
}
@@ -93,8 +127,9 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
type = Bukkit.getUnsafe().fromLegacy(new MaterialData(type, data == null ? (byte) damage : data), true);
}
}
- this.type = type;
- this.amount = amount;
+ // Paper start - create delegate
+ this.craftDelegate = type == Material.AIR ? ItemStack.empty() : ItemStack.of(type, amount);
+ // Paper end - create delegate
if (damage != 0) {
setDurability(damage);
}
@@ -109,17 +144,16 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
* @param stack the stack to copy
* @throws IllegalArgumentException if the specified stack is null or
* returns an item meta not created by the item factory
+ * @apiNote Use {@link #clone()}
+ * @see #clone()
*/
+ @org.jetbrains.annotations.ApiStatus.Obsolete(since = "1.21") // Paper
public ItemStack(@NotNull final ItemStack stack) throws IllegalArgumentException {
Preconditions.checkArgument(stack != null, "Cannot copy null stack");
- this.type = stack.getType();
- this.amount = stack.getAmount();
- if (this.type.isLegacy()) {
+ this.craftDelegate = stack.clone(); // Paper - delegate
+ if (stack.getType().isLegacy()) {
this.data = stack.getData();
}
- if (stack.hasItemMeta()) {
- setItemMeta0(stack.getItemMeta(), type);
- }
}
/**
@@ -127,10 +161,9 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
*
* @return Type of the items in this stack
*/
- @Utility
@NotNull
public Material getType() {
- return type;
+ return this.craftDelegate.getType(); // Paper - delegate
}
/**
@@ -153,19 +186,10 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
* Using this method in ItemStacks passed in events will result in undefined behavior.
* @see ItemStack#withType(Material)
*/
- @Utility
@Deprecated // Paper
public void setType(@NotNull Material type) {
Preconditions.checkArgument(type != null, "Material cannot be null");
- this.type = type;
- if (this.meta != null) {
- this.meta = Bukkit.getItemFactory().asMetaFor(meta, type);
- }
- if (type.isLegacy()) {
- createData((byte) 0);
- } else {
- this.data = null;
- }
+ this.craftDelegate.setType(type); // Paper - delegate
}
// Paper start
/**
@@ -177,12 +201,7 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
@NotNull
@org.jetbrains.annotations.Contract(value = "_ -> new", pure = true)
public ItemStack withType(@NotNull Material type) {
- ItemStack itemStack = new ItemStack(type, this.amount);
- if (this.hasItemMeta()) {
- itemStack.setItemMeta(this.getItemMeta());
- }
-
- return itemStack;
+ return this.craftDelegate.withType(type); // Paper - delegate
}
// Paper end
@@ -192,7 +211,7 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
* @return Amount of items in this stack
*/
public int getAmount() {
- return amount;
+ return this.craftDelegate.getAmount(); // Paper - delegate
}
/**
@@ -201,7 +220,7 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
* @param amount New amount of items in this stack
*/
public void setAmount(int amount) {
- this.amount = amount;
+ this.craftDelegate.setAmount(amount); // Paper - delegate
}
/**
@@ -254,11 +273,7 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
*/
@Deprecated
public void setDurability(final short durability) {
- ItemMeta meta = getItemMeta();
- if (meta != null) {
- ((Damageable) meta).setDamage(durability);
- setItemMeta(meta);
- }
+ this.craftDelegate.setDurability(durability); // Paper - delegate
}
/**
@@ -269,8 +284,7 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
*/
@Deprecated
public short getDurability() {
- ItemMeta meta = getItemMeta();
- return (meta == null) ? 0 : (short) ((Damageable) meta).getDamage();
+ return this.craftDelegate.getDurability(); // Paper - delegate
}
/**
@@ -282,17 +296,12 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
*
* @return The maximum you can stack this item to.
*/
- @Utility
public int getMaxStackSize() {
- if (meta != null && meta.hasMaxStackSize()) {
- return meta.getMaxStackSize();
- }
-
- return getType().getMaxStackSize();
+ return this.craftDelegate.getMaxStackSize(); // Paper - delegate
}
private void createData(final byte data) {
- this.data = type.getNewData(data);
+ this.data = this.craftDelegate.getType().getNewData(data); // Paper
}
@Override
@@ -306,17 +315,8 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
}
@Override
- @Utility
public boolean equals(Object obj) {
- if (this == obj) {
- return true;
- }
- if (!(obj instanceof ItemStack)) {
- return false;
- }
-
- ItemStack stack = (ItemStack) obj;
- return getAmount() == stack.getAmount() && isSimilar(stack);
+ return this.craftDelegate.equals(obj); // Paper - delegate
}
/**
@@ -326,49 +326,19 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
* @param stack the item stack to compare to
* @return true if the two stacks are equal, ignoring the amount
*/
- @Utility
public boolean isSimilar(@Nullable ItemStack stack) {
- if (stack == null) {
- return false;
- }
- if (stack == this) {
- return true;
- }
- Material comparisonType = (this.type.isLegacy()) ? Bukkit.getUnsafe().fromLegacy(this.getData(), true) : this.type; // This may be called from legacy item stacks, try to get the right material
- return comparisonType == stack.getType() && /* getDurability() == stack.getDurability() && */hasItemMeta() == stack.hasItemMeta() && (hasItemMeta() ? Bukkit.getItemFactory().equals(getItemMeta(), stack.getItemMeta()) : true); // Paper - remove redundant item durability check
+ return this.craftDelegate.isSimilar(stack); // Paper - delegate
}
@NotNull
@Override
public ItemStack clone() {
- try {
- ItemStack itemStack = (ItemStack) super.clone();
-
- if (this.meta != null) {
- itemStack.meta = this.meta.clone();
- }
-
- if (this.data != null) {
- itemStack.data = this.data.clone();
- }
-
- return itemStack;
- } catch (CloneNotSupportedException e) {
- throw new Error(e);
- }
+ return this.craftDelegate.clone(); // Paper - delegate
}
@Override
- @Utility
public int hashCode() {
- int hash = 1;
-
- hash = hash * 31 + getType().hashCode();
- hash = hash * 31 + getAmount();
- hash = hash * 31 + (getDurability() & 0xffff);
- hash = hash * 31 + (hasItemMeta() ? (meta == null ? getItemMeta().hashCode() : meta.hashCode()) : 0);
-
- return hash;
+ return this.craftDelegate.hashCode(); // Paper - delegate
}
/**
@@ -378,7 +348,7 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
* @return True if this has the given enchantment
*/
public boolean containsEnchantment(@NotNull Enchantment ench) {
- return meta == null ? false : meta.hasEnchant(ench);
+ return this.craftDelegate.containsEnchantment(ench); // Paper - delegate
}
/**
@@ -388,7 +358,7 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
* @return Level of the enchantment, or 0
*/
public int getEnchantmentLevel(@NotNull Enchantment ench) {
- return meta == null ? 0 : meta.getEnchantLevel(ench);
+ return this.craftDelegate.getEnchantmentLevel(ench); // Paper - delegate
}
/**
@@ -398,7 +368,7 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
*/
@NotNull
public Map<Enchantment, Integer> getEnchantments() {
- return meta == null ? ImmutableMap.<Enchantment, Integer>of() : meta.getEnchants();
+ return this.craftDelegate.getEnchantments(); // Paper - delegate
}
/**
@@ -474,10 +444,7 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
* @param level Level of the enchantment
*/
public void addUnsafeEnchantment(@NotNull Enchantment ench, int level) {
- ItemMeta itemMeta = (meta == null ? meta = Bukkit.getItemFactory().getItemMeta(type) : meta);
- if (itemMeta != null) {
- itemMeta.addEnchant(ench, level, true);
- }
+ this.craftDelegate.addUnsafeEnchantment(ench, level); // Paper - delegate
}
/**
@@ -488,23 +455,14 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
* @return Previous level, or 0
*/
public int removeEnchantment(@NotNull Enchantment ench) {
- int level = getEnchantmentLevel(ench);
- if (level == 0 || meta == null) {
- return level;
- }
- meta.removeEnchant(ench);
- return level;
+ return this.craftDelegate.removeEnchantment(ench); // Paper - delegate
}
/**
* Removes all enchantments on this ItemStack.
*/
public void removeEnchantments() {
- if (meta == null) {
- return;
- }
-
- meta.removeEnchantments();
+ this.craftDelegate.removeEnchantments(); // Paper - delegate
}
@Override
@@ -660,7 +618,7 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
*/
@UndefinedNullability // Paper
public ItemMeta getItemMeta() {
- return this.meta == null ? Bukkit.getItemFactory().getItemMeta(this.type) : this.meta.clone();
+ return this.craftDelegate.getItemMeta(); // Paper - delegate
}
/**
@@ -669,7 +627,7 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
* @return Returns true if some meta data has been set for this item
*/
public boolean hasItemMeta() {
- return !Bukkit.getItemFactory().equals(meta, null);
+ return this.craftDelegate.hasItemMeta(); // Paper - delegate
}
/**
@@ -682,28 +640,10 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
* the {@link ItemFactory}
*/
public boolean setItemMeta(@Nullable ItemMeta itemMeta) {
- return setItemMeta0(itemMeta, type);
+ return this.craftDelegate.setItemMeta(itemMeta); // Paper - delegate
}
- /*
- * Cannot be overridden, so it's safe for constructor call
- */
- private boolean setItemMeta0(@Nullable ItemMeta itemMeta, @NotNull Material material) {
- if (itemMeta == null) {
- this.meta = null;
- return true;
- }
- if (!Bukkit.getItemFactory().isApplicable(itemMeta, material)) {
- return false;
- }
- this.meta = Bukkit.getItemFactory().asMetaFor(itemMeta, material);
-
- if (this.meta == itemMeta) {
- this.meta = itemMeta.clone();
- }
-
- return true;
- }
+ // Paper - delegate
@Override
@NotNull
@@ -807,11 +747,7 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
}
public int getMaxItemUseDuration(@NotNull final org.bukkit.entity.LivingEntity entity) {
- if (type == null || type == Material.AIR || !type.isItem()) {
- return 0;
- }
- // Requires access to NMS
- return ensureServerConversions().getMaxItemUseDuration(entity);
+ return this.craftDelegate.getMaxItemUseDuration(entity); // Paper - delegate
}
/**
@@ -1061,7 +997,8 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
*/
@NotNull
public static ItemStack empty() {
- return new ItemStack();
+ //noinspection deprecation
+ return Bukkit.getUnsafe().createEmptyStack(); // Paper - proxy ItemStack
}
/**
@@ -1069,7 +1006,7 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
* it is either air or the stack has a size of 0.
*/
public boolean isEmpty() {
- return type.isAir() || amount <= 0;
+ return this.craftDelegate.isEmpty(); // Paper - delegate
}
// Paper end
// Paper start - expose itemstack tooltip lines
diff --git a/src/test/java/org/bukkit/configuration/ConfigurationSectionTest.java b/src/test/java/org/bukkit/configuration/ConfigurationSectionTest.java
index ee5bc86f47cf5599e4c5c34e3a9084f86d74bdb7..c6b49c7e0a3357566fc859d4f0c76e77fefbd371 100644
--- a/src/test/java/org/bukkit/configuration/ConfigurationSectionTest.java
+++ b/src/test/java/org/bukkit/configuration/ConfigurationSectionTest.java
@@ -547,6 +547,7 @@ public abstract class ConfigurationSectionTest {
}
@Test
+ @org.junit.jupiter.api.Disabled("ItemStack can't exist without the Server, test moved to server")
public void testGetItemStack_String() {
ConfigurationSection section = getConfigurationSection();
String key = "exists";
@@ -559,6 +560,7 @@ public abstract class ConfigurationSectionTest {
}
@Test
+ @org.junit.jupiter.api.Disabled("ItemStack can't exist without the Server, test moved to server")
public void testGetItemStack_String_ItemStack() {
ConfigurationSection section = getConfigurationSection();
String key = "exists";
@@ -572,6 +574,7 @@ public abstract class ConfigurationSectionTest {
}
@Test
+ @org.junit.jupiter.api.Disabled("ItemStack can't exist without the Server, test moved to server")
public void testIsItemStack() {
ConfigurationSection section = getConfigurationSection();
String key = "exists";
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