From 8ea55f306a50e2d46549e53c765bb6d8b62fb34f Mon Sep 17 00:00:00 2001
From: CraftBukkit/Spigot <noreply+git-craftbukkit@papermc.io>
Date: Sun, 3 Apr 2022 09:20:16 +1000
Subject: [PATCH] SPIGOT-6973: Setting biome calls String#intern for every
 biome placed

By: md_5 <git@md-5.net>
---
 .../net/minecraft/resources/ResourceKey.patch | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 paper-server/nms-patches/net/minecraft/resources/ResourceKey.patch

diff --git a/paper-server/nms-patches/net/minecraft/resources/ResourceKey.patch b/paper-server/nms-patches/net/minecraft/resources/ResourceKey.patch
new file mode 100644
index 0000000000..e71146066e
--- /dev/null
+++ b/paper-server/nms-patches/net/minecraft/resources/ResourceKey.patch
@@ -0,0 +1,29 @@
+--- a/net/minecraft/resources/ResourceKey.java
++++ b/net/minecraft/resources/ResourceKey.java
+@@ -10,7 +10,7 @@
+ 
+ public class ResourceKey<T> {
+ 
+-    private static final Map<String, ResourceKey<?>> VALUES = Collections.synchronizedMap(Maps.newIdentityHashMap());
++    private static final Map<String, ResourceKey<?>> VALUES = Collections.synchronizedMap(Maps.newHashMap()); // CraftBukkit - SPIGOT-6973: remove costly intern
+     private final MinecraftKey registryName;
+     private final MinecraftKey location;
+ 
+@@ -29,7 +29,7 @@
+     }
+ 
+     private static <T> ResourceKey<T> create(MinecraftKey minecraftkey, MinecraftKey minecraftkey1) {
+-        String s = (minecraftkey + ":" + minecraftkey1).intern();
++        String s = (minecraftkey + ":" + minecraftkey1); // CraftBukkit - SPIGOT-6973: remove costly intern
+ 
+         return (ResourceKey) ResourceKey.VALUES.computeIfAbsent(s, (s1) -> {
+             return new ResourceKey<>(minecraftkey, minecraftkey1);
+@@ -50,7 +50,7 @@
+     }
+ 
+     public <E> Optional<ResourceKey<E>> cast(ResourceKey<? extends IRegistry<E>> resourcekey) {
+-        return this.isFor(resourcekey) ? Optional.of(this) : Optional.empty();
++        return this.isFor(resourcekey) ? (Optional) Optional.of(this) : Optional.empty(); // CraftBukkit - decompile error
+     }
+ 
+     public MinecraftKey location() {