Paper/patches/api/0363-Expand-the-Registry-API.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sat, 14 Aug 2021 16:19:03 -0700
Subject: [PATCH] Expand the Registry API


diff --git a/src/main/java/org/bukkit/Registry.java b/src/main/java/org/bukkit/Registry.java
index 6242336de18fdd708cc3d7b745cbbace13140bc0..661d424c609a01ad9bee837b4069d9e4e98d20c0 100644
--- a/src/main/java/org/bukkit/Registry.java
+++ b/src/main/java/org/bukkit/Registry.java
@@ -209,6 +209,25 @@ public interface Registry<T extends Keyed> extends Iterable<T> {
             return Arrays.stream(org.bukkit.potion.PotionEffectType.values()).iterator();
         }
     };
+
+    /**
+     * Structure types.
+     *
+     * @see StructureType
+     */
+    Registry<StructureType> STRUCTURE_TYPE = new Registry<StructureType>() {
+
+        @Override
+        public @Nullable StructureType get(@NotNull NamespacedKey key) {
+            return StructureType.getStructureTypes().get(key.getKey());
+        }
+
+        @NotNull
+        @Override
+        public Iterator<StructureType> iterator() {
+            return StructureType.getStructureTypes().values().iterator();
+        }
+    };
     // Paper end
 
     /**
diff --git a/src/main/java/org/bukkit/StructureType.java b/src/main/java/org/bukkit/StructureType.java
index 8acb2b9de398ab5f4b18c46e9ab9eb964df8be3f..5558daa9512212a4b05f174b64c4c998ebbccfcc 100644
--- a/src/main/java/org/bukkit/StructureType.java
+++ b/src/main/java/org/bukkit/StructureType.java
@@ -19,7 +19,7 @@ import org.jetbrains.annotations.Nullable;
  * The registration of new {@link StructureType}s is case-sensitive.
  */
 // Order is retrieved from WorldGenFactory
-public final class StructureType {
+public final class StructureType implements Keyed { // Paper - implement keyed
 
     private static final Map<String, StructureType> structureTypeMap = new HashMap<>();
 
@@ -244,4 +244,10 @@ public final class StructureType {
     public static Map<String, StructureType> getStructureTypes() {
         return ImmutableMap.copyOf(structureTypeMap);
     }
+    // Paper start
+    @Override
+    public @NotNull NamespacedKey getKey() {
+        return NamespacedKey.minecraft(this.name);
+    }
+    // Paper end
 }