Paper/patches/server/1042-Fixup-NamespacedKey-handling.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Nassim Jahnke <nassim@njahnke.dev>
Date: Sat, 6 Jan 2024 14:31:00 +0100
Subject: [PATCH] Fixup NamespacedKey handling


diff --git a/src/main/java/com/destroystokyo/paper/loottable/PaperContainerEntityLootableInventory.java b/src/main/java/com/destroystokyo/paper/loottable/PaperContainerEntityLootableInventory.java
index 9ca389ca789dc54bba3542cac0aac2e1dc66c870..15173e715fa36546820d930a46e0f0c493d07cfc 100644
--- a/src/main/java/com/destroystokyo/paper/loottable/PaperContainerEntityLootableInventory.java
+++ b/src/main/java/com/destroystokyo/paper/loottable/PaperContainerEntityLootableInventory.java
@@ -17,7 +17,7 @@ public class PaperContainerEntityLootableInventory implements PaperLootableEntit
 
     @Override
     public org.bukkit.loot.LootTable getLootTable() {
-        return entity.getLootTable() != null ? Bukkit.getLootTable(CraftNamespacedKey.fromMinecraft(entity.getLootTable())) : null;
+        return entity.getLootTable() != null && !entity.getLootTable().getPath().isEmpty() ? Bukkit.getLootTable(CraftNamespacedKey.fromMinecraft(entity.getLootTable())) : null;
     }
 
     @Override
diff --git a/src/main/java/com/destroystokyo/paper/loottable/PaperTileEntityLootableInventory.java b/src/main/java/com/destroystokyo/paper/loottable/PaperTileEntityLootableInventory.java
index 9cfa5d36a6991067a3866e0d437749fafcc0158e..2ee4ee14ab3345486dad6b24fd9a4fcc6c746b99 100644
--- a/src/main/java/com/destroystokyo/paper/loottable/PaperTileEntityLootableInventory.java
+++ b/src/main/java/com/destroystokyo/paper/loottable/PaperTileEntityLootableInventory.java
@@ -15,7 +15,7 @@ public class PaperTileEntityLootableInventory implements PaperLootableBlockInven
 
     @Override
     public org.bukkit.loot.LootTable getLootTable() {
-        return tileEntityLootable.lootTable != null ? Bukkit.getLootTable(CraftNamespacedKey.fromMinecraft(tileEntityLootable.lootTable)) : null;
+        return tileEntityLootable.lootTable != null && !tileEntityLootable.lootTable.getPath().isEmpty() ? Bukkit.getLootTable(CraftNamespacedKey.fromMinecraft(tileEntityLootable.lootTable)) : null;
     }
 
     @Override
diff --git a/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttribute.java b/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttribute.java
index 8c9ce07f6a9c2799ce4d8b6a7d8eccd37cce6d43..f9e8c1f8416c4e5ae11e1d742cf3655faa480ce9 100644
--- a/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttribute.java
+++ b/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttribute.java
@@ -24,7 +24,10 @@ public class CraftAttribute {
     public static Attribute stringToBukkit(String bukkit) {
         Preconditions.checkArgument(bukkit != null);
 
-        return Registry.ATTRIBUTE.get(NamespacedKey.fromString(bukkit));
+        // Paper start - Fixup NamespacedKey handling
+        final NamespacedKey key = NamespacedKey.fromString(bukkit);
+        return key != null ? Registry.ATTRIBUTE.get(key) : null;
+        // Paper end - Fixup NamespacedKey handling
     }
 
     public static net.minecraft.world.entity.ai.attributes.Attribute bukkitToMinecraft(Attribute bukkit) {
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaArmor.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaArmor.java
index 24b87a1566b48be1367970a9ba887a6b3a785bb9..9f2626c8c5cb8e713f7263b73d6a31d39f024f31 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaArmor.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaArmor.java
@@ -67,14 +67,22 @@ public class CraftMetaArmor extends CraftMetaItem implements ArmorMeta {
         if (tag.contains(CraftMetaArmor.TRIM.NBT)) {
             CompoundTag trimCompound = tag.getCompound(CraftMetaArmor.TRIM.NBT);
 
-            if (trimCompound.contains(CraftMetaArmor.TRIM_MATERIAL.NBT) && trimCompound.contains(CraftMetaArmor.TRIM_PATTERN.NBT)) {
-                TrimMaterial trimMaterial = Registry.TRIM_MATERIAL.get(NamespacedKey.fromString(trimCompound.getString(CraftMetaArmor.TRIM_MATERIAL.NBT)));
-                TrimPattern trimPattern = Registry.TRIM_PATTERN.get(NamespacedKey.fromString(trimCompound.getString(CraftMetaArmor.TRIM_PATTERN.NBT)));
+            // Paper start - Fixup NamedspacedKey handling
+            if (trimCompound.contains(CraftMetaArmor.TRIM_MATERIAL.NBT, net.minecraft.nbt.Tag.TAG_STRING) && trimCompound.contains(CraftMetaArmor.TRIM_PATTERN.NBT, net.minecraft.nbt.Tag.TAG_STRING)) { // TODO Can also be inlined in a compound tag
+                TrimMaterial trimMaterial = registryEntry(Registry.TRIM_MATERIAL, trimCompound.getString(TRIM_MATERIAL.NBT));
+                TrimPattern trimPattern = registryEntry(Registry.TRIM_PATTERN, trimCompound.getString(TRIM_PATTERN.NBT));
 
-                this.trim = new ArmorTrim(trimMaterial, trimPattern);
+                this.trim = trimMaterial != null && trimPattern != null ? new ArmorTrim(trimMaterial, trimPattern) : null;
+                // Paper end - Fixup NamedspacedKey handling
             }
         }
     }
+    // Paper start - Fixup NamedspacedKey handling
+    private <T extends org.bukkit.Keyed> T registryEntry(final Registry<T> registry, final String value) {
+        final NamespacedKey key = NamespacedKey.fromString(value);
+        return key != null ? registry.get(key) : null;
+    }
+    // Paper end - Fixup NamedspacedKey handling
 
     CraftMetaArmor(Map<String, Object> map) {
         super(map);
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaMusicInstrument.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaMusicInstrument.java
index fad6295e75179edfc4e88d15c21b0b09f9156692..63e3c5c3f5aff273498d25db0fc9feb76ab27c2f 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaMusicInstrument.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaMusicInstrument.java
@@ -30,7 +30,10 @@ public class CraftMetaMusicInstrument extends CraftMetaItem implements MusicInst
 
         if (tag.contains(CraftMetaMusicInstrument.GOAT_HORN_INSTRUMENT.NBT)) {
             String string = tag.getString(CraftMetaMusicInstrument.GOAT_HORN_INSTRUMENT.NBT);
-            this.instrument = Registry.INSTRUMENT.get(NamespacedKey.fromString(string));
+            // Paper start - Fixup NamespacedKey handling
+            final NamespacedKey key = NamespacedKey.fromString(string);
+            this.instrument = key != null ? Registry.INSTRUMENT.get(key) : null;
+            // Paper end - Fixup NamespacedKey handling
         }
     }
 
diff --git a/src/main/java/org/bukkit/craftbukkit/potion/CraftPotionType.java b/src/main/java/org/bukkit/craftbukkit/potion/CraftPotionType.java
index 1ce2cf121c0768d06cbd4f9238286b02e139768b..afeb1f634a8d9e46136d8b425453e6c745132fbe 100644
--- a/src/main/java/org/bukkit/craftbukkit/potion/CraftPotionType.java
+++ b/src/main/java/org/bukkit/craftbukkit/potion/CraftPotionType.java
@@ -43,7 +43,10 @@ public class CraftPotionType implements PotionType.InternalPotionData {
     public static PotionType stringToBukkit(String string) {
         Preconditions.checkArgument(string != null);
 
-        return Registry.POTION.get(NamespacedKey.fromString(string));
+        // Paper start - Fixup NamespacedKey handling
+        final NamespacedKey key = NamespacedKey.fromString(string);
+        return key != null ? Registry.POTION.get(key) : null;
+        // Paper end - Fixup NamespacedKey handling
     }
 
     private final NamespacedKey key;
diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftNamespacedKey.java b/src/main/java/org/bukkit/craftbukkit/util/CraftNamespacedKey.java
index 5f40d240b879e3989897b6e45725a8e5a6a7f194..5014192edb9616ce725fc1592832034789527b6f 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/CraftNamespacedKey.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/CraftNamespacedKey.java
@@ -13,7 +13,7 @@ public final class CraftNamespacedKey {
             return null;
         }
         ResourceLocation minecraft = ResourceLocation.tryParse(string);
-        return (minecraft == null) ? null : CraftNamespacedKey.fromMinecraft(minecraft);
+        return (minecraft == null || minecraft.getPath().isEmpty()) ? null : CraftNamespacedKey.fromMinecraft(minecraft); // Paper - Bukkit's parser does not match Vanilla for empty paths
     }
 
     public static NamespacedKey fromString(String string) {