Switch Impl types to Holderable (#11662)

* Switch Impl types to Holderable * Fix compile issues * more improvements * compile fixes * remove unneeded unwrapAndConvertHolder call --------- Co-authored-by: Bjarne Koll <git@lynxplay.dev>
2025-08-27 18:33:51 -07:00 · 2024-12-08 12:50:55 -08:00
parent e7ac163b76
commit a53051b155
10 changed files with 917 additions and 288 deletions
--- a/patches/server/Registry-Modification-API.patch
+++ b/patches/server/Registry-Modification-API.patch
@@ -20,14 +20,6 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 import java.util.Collections;
 import java.util.IdentityHashMap;
 import java.util.List;
-@@ -0,0 +0,0 @@ import org.jspecify.annotations.Nullable;
- 
- import static io.papermc.paper.registry.entry.RegistryEntry.apiOnly;
- import static io.papermc.paper.registry.entry.RegistryEntry.entry;
-+import static io.papermc.paper.registry.entry.RegistryEntry.writable;
- 
- public final class PaperRegistries {
- 
@@ -0,0 +0,0 @@ public final class PaperRegistries {
         return ResourceKey.create((ResourceKey<? extends Registry<M>>) PaperRegistries.registryToNms(typedKey.registryKey()), PaperAdventure.asVanilla(typedKey.key()));
     }
@@ -81,17 +73,17 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    @FunctionalInterface
 +    interface Filler<M, T, B extends PaperRegistryBuilder<M, T>> {
 +
-+        B fill(Conversions conversions, TypedKey<T> key, @Nullable M nms);
+        B fill(Conversions conversions, @Nullable M nms);
 +
 +        default Factory<M, T, B> asFactory() {
-+            return (lookup, key) -> this.fill(lookup, key, null);
+            return (lookup) -> this.fill(lookup, null);
 +        }
 +    }
 +
 +    @FunctionalInterface
 +    interface Factory<M, T, B extends PaperRegistryBuilder<M, T>> {
 +
-+        B create(Conversions conversions, TypedKey<T> key);
+        B create(Conversions conversions);
 +    }
 +}
 diff --git a/src/main/java/io/papermc/paper/registry/PaperRegistryListenerManager.java b/src/main/java/io/papermc/paper/registry/PaperRegistryListenerManager.java
@@ -204,7 +196,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        }
 +        final RegistryEntry.Modifiable<M, T, B> modifiableEntry = RegistryEntry.Modifiable.asModifiable(entry);
 +        @SuppressWarnings("PatternValidation") final TypedKey<T> typedKey = TypedKey.create(entry.apiKey(), Key.key(key.location().getNamespace(), key.location().getPath()));
-+        final B builder = modifiableEntry.fillBuilder(conversions, typedKey, nms);
+        final B builder = modifiableEntry.fillBuilder(conversions, nms);
 +        return this.registerWithListeners(registry, modifiableEntry, key, nms, builder, registrationInfo, registerMethod, conversions);
 +    }
 +
@@ -324,9 +316,9 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +package io.papermc.paper.registry;
 +
 +import com.mojang.serialization.Lifecycle;
-+import io.papermc.paper.adventure.PaperAdventure;
 +import io.papermc.paper.registry.data.util.Conversions;
 +import io.papermc.paper.registry.entry.RegistryEntry;
+import io.papermc.paper.registry.entry.RegistryTypeMapper;
 +import io.papermc.paper.registry.event.WritableRegistry;
 +import java.util.Optional;
 +import java.util.function.BiFunction;
@@ -338,7 +330,6 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +import org.bukkit.NamespacedKey;
 +import org.bukkit.craftbukkit.CraftRegistry;
 +import org.bukkit.craftbukkit.util.ApiVersion;
-+import org.jspecify.annotations.Nullable;
 +
 +public class WritableCraftRegistry<M, T extends Keyed, B extends PaperRegistryBuilder<M, T>> extends CraftRegistry<T, M> {
 +
@@ -347,7 +338,6 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    private final RegistryEntry.BuilderHolder<M, T, B> entry;
 +    private final MappedRegistry<M> registry;
 +    private final PaperRegistryBuilder.Factory<M, T, ? extends B> builderFactory;
-+    private final BiFunction<? super NamespacedKey, M, T> minecraftToBukkit;
 +
 +    public WritableCraftRegistry(
 +        final RegistryEntry.BuilderHolder<M, T, B> entry,
@@ -355,19 +345,18 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        final MappedRegistry<M> registry,
 +        final BiFunction<NamespacedKey, ApiVersion, NamespacedKey> serializationUpdater,
 +        final PaperRegistryBuilder.Factory<M, T, ? extends B> builderFactory,
-+        final BiFunction<? super NamespacedKey, M, T> minecraftToBukkit
+        final RegistryTypeMapper<M, T> minecraftToBukkit
 +    ) {
-+        super(classToPreload, registry, null, serializationUpdater);
+        super(classToPreload, registry, minecraftToBukkit, serializationUpdater);
 +        this.entry = entry;
 +        this.registry = registry;
 +        this.builderFactory = builderFactory;
-+        this.minecraftToBukkit = minecraftToBukkit;
 +    }
 +
 +    public void register(final TypedKey<T> key, final Consumer<? super B> value, final Conversions conversions) {
-+        final ResourceKey<M> resourceKey = ResourceKey.create(this.registry.key(), PaperAdventure.asVanilla(key.key()));
+        final ResourceKey<M> resourceKey = PaperRegistries.toNms(key);
 +        this.registry.validateWrite(resourceKey);
-+        final B builder = this.newBuilder(conversions, key);
+        final B builder = this.newBuilder(conversions);
 +        value.accept(builder);
 +        PaperRegistryListenerManager.INSTANCE.registerWithListeners(
 +            this.registry,
@@ -379,24 +368,12 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        );
 +    }
 +
-+    @Override
-+    public final @Nullable T createBukkit(final NamespacedKey namespacedKey, final @Nullable M minecraft) {
-+        if (minecraft == null) {
-+            return null;
-+        }
-+        return this.minecraftToBukkit(namespacedKey, minecraft);
-+    }
-+
 +    public WritableRegistry<T, B> createApiWritableRegistry(final Conversions conversions) {
 +        return new ApiWritableRegistry(conversions);
 +    }
 +
-+    public T minecraftToBukkit(final NamespacedKey namespacedKey, final M minecraft) {
-+        return this.minecraftToBukkit.apply(namespacedKey, minecraft);
-+    }
-+
-+    protected B newBuilder(final Conversions conversions, final TypedKey<T> key) {
-+        return this.builderFactory.create(conversions, key);
+    protected B newBuilder(final Conversions conversions) {
+        return this.builderFactory.create(conversions);
 +    }
 +
 +    public class ApiWritableRegistry implements WritableRegistry<T, B> {
@@ -421,15 +398,40 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
@@ -0,0 +0,0 @@
 +package io.papermc.paper.registry.data.util;
 +
+import com.google.common.base.Preconditions;
 +import com.mojang.serialization.JavaOps;
 +import io.papermc.paper.adventure.WrapperAwareSerializer;
+import java.util.Optional;
 +import net.kyori.adventure.text.Component;
+import net.minecraft.core.Registry;
+import net.minecraft.core.RegistryAccess;
 +import net.minecraft.resources.RegistryOps;
+import net.minecraft.resources.ResourceKey;
+import org.bukkit.craftbukkit.CraftRegistry;
 +import org.jetbrains.annotations.Contract;
 +import org.jspecify.annotations.Nullable;
 +
 +public class Conversions {
 +
+    private static @Nullable Conversions globalInstance;
+    public static Conversions global() {
+        if (globalInstance == null) {
+            final RegistryAccess globalAccess = CraftRegistry.getMinecraftRegistry();
+            Preconditions.checkState(globalAccess != null, "Global registry access is not available");
+            globalInstance = new Conversions(new RegistryOps.RegistryInfoLookup() {
+                @Override
+                public <T> Optional<RegistryOps.RegistryInfo<T>> lookup(final ResourceKey<? extends Registry<? extends T>> registryRef) {
+                    final Registry<T> registry = globalAccess.lookupOrThrow(registryRef);
+                    return Optional.of(
+                        new RegistryOps.RegistryInfo<>(registry, registry, registry.registryLifecycle())
+                    );
+                }
+            });
+        }
+        return globalInstance;
+    }
+
+
 +    private final RegistryOps.RegistryInfoLookup lookup;
 +    private final WrapperAwareSerializer serializer;
 +
@@ -473,15 +475,12 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +import io.papermc.paper.registry.PaperRegistryBuilder;
 +import io.papermc.paper.registry.RegistryHolder;
 +import io.papermc.paper.registry.RegistryKey;
-+import io.papermc.paper.registry.TypedKey;
 +import io.papermc.paper.registry.WritableCraftRegistry;
 +import io.papermc.paper.registry.data.util.Conversions;
-+import java.util.function.BiFunction;
 +import net.minecraft.core.MappedRegistry;
 +import net.minecraft.core.Registry;
 +import net.minecraft.resources.ResourceKey;
 +import org.bukkit.Keyed;
-+import org.bukkit.NamespacedKey;
 +
 +public class AddableRegistryEntry<M, T extends Keyed, B extends PaperRegistryBuilder<M, T>> extends CraftRegistryEntry<M, T> implements RegistryEntry.Addable<M, T, B> {
 +
@@ -491,7 +490,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        final ResourceKey<? extends Registry<M>> mcKey,
 +        final RegistryKey<T> apiKey,
 +        final Class<?> classToPreload,
-+        final BiFunction<NamespacedKey, M, T> minecraftToBukkit,
+        final RegistryTypeMapper<M, T> minecraftToBukkit,
 +        final PaperRegistryBuilder.Filler<M, T, B> builderFiller
 +    ) {
 +        super(mcKey, apiKey, classToPreload, minecraftToBukkit);
@@ -508,8 +507,8 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    }
 +
 +    @Override
-+    public B fillBuilder(final Conversions conversions, final TypedKey<T> key, final M nms) {
-+        return this.builderFiller.fill(conversions, key, nms);
+    public B fillBuilder(final Conversions conversions, final M nms) {
+        return this.builderFiller.fill(conversions, nms);
 +    }
 +}
 diff --git a/src/main/java/io/papermc/paper/registry/entry/ModifiableRegistryEntry.java b/src/main/java/io/papermc/paper/registry/entry/ModifiableRegistryEntry.java
@@ -522,13 +521,10 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +
 +import io.papermc.paper.registry.PaperRegistryBuilder;
 +import io.papermc.paper.registry.RegistryKey;
-+import io.papermc.paper.registry.TypedKey;
 +import io.papermc.paper.registry.data.util.Conversions;
-+import java.util.function.BiFunction;
 +import net.minecraft.core.Registry;
 +import net.minecraft.resources.ResourceKey;
 +import org.bukkit.Keyed;
-+import org.bukkit.NamespacedKey;
 +
 +public class ModifiableRegistryEntry<M, T extends Keyed, B extends PaperRegistryBuilder<M, T>> extends CraftRegistryEntry<M, T> implements RegistryEntry.Modifiable<M, T, B> {
 +
@@ -538,7 +534,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        final ResourceKey<? extends Registry<M>> mcKey,
 +        final RegistryKey<T> apiKey,
 +        final Class<?> toPreload,
-+        final BiFunction<NamespacedKey, M, T> minecraftToBukkit,
+        final RegistryTypeMapper<M, T> minecraftToBukkit,
 +        final PaperRegistryBuilder.Filler<M, T, B> builderFiller
 +    ) {
 +        super(mcKey, apiKey, toPreload, minecraftToBukkit);
@@ -546,8 +542,8 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    }
 +
 +    @Override
-+    public B fillBuilder(final Conversions conversions, final TypedKey<T> key, final M nms) {
-+        return this.builderFiller.fill(conversions, key, nms);
+    public B fillBuilder(final Conversions conversions, final M nms) {
+        return this.builderFiller.fill(conversions, nms);
 +    }
 +}
 diff --git a/src/main/java/io/papermc/paper/registry/entry/RegistryEntry.java b/src/main/java/io/papermc/paper/registry/entry/RegistryEntry.java
@@ -567,8 +563,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +import io.papermc.paper.registry.event.RegistryFreezeEventImpl;
 import io.papermc.paper.registry.legacy.DelayedRegistryEntry;
 import java.util.function.BiFunction;
- import java.util.function.Supplier;
-@@ -0,0 +0,0 @@ import net.minecraft.resources.ResourceKey;
+ import net.minecraft.core.Registry;
 import org.bukkit.Keyed;
 import org.bukkit.NamespacedKey;
 import org.bukkit.craftbukkit.util.ApiVersion;
@@ -577,12 +572,13 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 public interface RegistryEntry<M, B extends Keyed> extends RegistryEntryInfo<M, B> { // TODO remove Keyed
 
@@ -0,0 +0,0 @@ public interface RegistryEntry<M, B extends Keyed> extends RegistryEntryInfo<M,
+     default RegistryEntry<M, B> delayed() {
         return new DelayedRegistryEntry<>(this);
     }
- 
+
 +    interface BuilderHolder<M, T, B extends PaperRegistryBuilder<M, T>> extends RegistryEntryInfo<M, T> {
 +
-+        B fillBuilder(Conversions conversions, TypedKey<T> key, M nms);
+        B fillBuilder(Conversions conversions, M nms);
 +    }
 +
 +    /**
@@ -638,34 +634,36 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    private static <M, B extends Keyed> RegistryEntryInfo<M, B> possiblyUnwrap(final RegistryEntryInfo<M, B> entry) {
 +        return entry instanceof final DelayedRegistryEntry<M, B> delayed ? delayed.delegate() : entry;
 +    }
+ }
+diff --git a/src/main/java/io/papermc/paper/registry/entry/RegistryEntryBuilder.java b/src/main/java/io/papermc/paper/registry/entry/RegistryEntryBuilder.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/io/papermc/paper/registry/entry/RegistryEntryBuilder.java
+++ b/src/main/java/io/papermc/paper/registry/entry/RegistryEntryBuilder.java
+@@ -0,0 +0,0 @@
+ package io.papermc.paper.registry.entry;
+ 
+ import com.mojang.datafixers.util.Either;
+import io.papermc.paper.registry.PaperRegistryBuilder;
+ import io.papermc.paper.registry.RegistryKey;
+ import java.util.function.BiFunction;
+ import java.util.function.Function;
+@@ -0,0 +0,0 @@ public class RegistryEntryBuilder<M, A extends Keyed> { // TODO remove Keyed
+         public RegistryEntry<M, A> build() {
+             return new CraftRegistryEntry<>(this.mcKey, this.apiKey, this.classToPreload, this.minecraftToBukkit);
+         }
 +
-     static <M, B extends Keyed> RegistryEntry<M, B> entry(
-         final ResourceKey<? extends Registry<M>> mcKey,
-         final RegistryKey<B> apiKey,
-@@ -0,0 +0,0 @@ public interface RegistryEntry<M, B extends Keyed> extends RegistryEntryInfo<M,
-     ) {
-         return new ApiRegistryEntry<>(mcKey, apiKey, apiRegistrySupplier);
+        public <B extends PaperRegistryBuilder<M, A>> RegistryEntry<M, A> modifiable(final PaperRegistryBuilder.Filler<M, A, B> filler) {
+            return new ModifiableRegistryEntry<>(this.mcKey, this.apiKey, this.classToPreload, this.minecraftToBukkit, filler);
+        }
+
+        public <B extends PaperRegistryBuilder<M, A>> RegistryEntry<M, A> addable(final PaperRegistryBuilder.Filler<M, A, B> filler) {
+            return new AddableRegistryEntry<>(this.mcKey, this.apiKey, this.classToPreload, this.minecraftToBukkit, filler);
+        }
+
+        public <B extends PaperRegistryBuilder<M, A>> RegistryEntry<M, A> writable(final PaperRegistryBuilder.Filler<M, A, B> filler) {
+            return new WritableRegistryEntry<>(this.mcKey, this.apiKey, this.classToPreload, this.minecraftToBukkit, filler);
+        }
     }
-+
-+    static <M, T extends Keyed, B extends PaperRegistryBuilder<M, T>> RegistryEntry<M, T> modifiable(
-+        final ResourceKey<? extends Registry<M>> mcKey,
-+        final RegistryKey<T> apiKey,
-+        final Class<?> toPreload,
-+        final BiFunction<NamespacedKey, M, T> minecraftToBukkit,
-+        final PaperRegistryBuilder.Filler<M, T, B> filler
-+    ) {
-+        return new ModifiableRegistryEntry<>(mcKey, apiKey, toPreload, minecraftToBukkit, filler);
-+    }
-+
-+    static <M, T extends Keyed, B extends PaperRegistryBuilder<M, T>> RegistryEntry<M, T> writable(
-+        final ResourceKey<? extends Registry<M>> mcKey,
-+        final RegistryKey<T> apiKey,
-+        final Class<?> toPreload,
-+        final BiFunction<NamespacedKey, M, T> minecraftToBukkit,
-+        final PaperRegistryBuilder.Filler<M, T, B> filler
-+    ) {
-+        return new WritableRegistryEntry<>(mcKey, apiKey, toPreload, minecraftToBukkit, filler);
-+    }
 }
 diff --git a/src/main/java/io/papermc/paper/registry/entry/WritableRegistryEntry.java b/src/main/java/io/papermc/paper/registry/entry/WritableRegistryEntry.java
 new file mode 100644
@@ -675,9 +673,12 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
@@ -0,0 +0,0 @@
 +package io.papermc.paper.registry.entry;
 +
+import com.mojang.datafixers.util.Either;
 +import io.papermc.paper.registry.PaperRegistryBuilder;
 +import io.papermc.paper.registry.RegistryKey;
 +import java.util.function.BiFunction;
+import java.util.function.Function;
+import net.minecraft.core.Holder;
 +import net.minecraft.core.Registry;
 +import net.minecraft.resources.ResourceKey;
 +import org.bukkit.Keyed;
@@ -689,7 +690,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        final ResourceKey<? extends Registry<M>> mcKey,
 +        final RegistryKey<T> apiKey,
 +        final Class<?> classToPreload,
-+        final BiFunction<NamespacedKey, M, T> minecraftToBukkit,
+        final RegistryTypeMapper<M, T> minecraftToBukkit,
 +        final PaperRegistryBuilder.Filler<M, T, B> builderFiller
 +    ) {
 +        super(mcKey, apiKey, classToPreload, minecraftToBukkit, builderFiller);
@@ -1213,40 +1214,12 @@ diff --git a/src/main/java/net/minecraft/resources/RegistryDataLoader.java b/src
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
 --- a/src/main/java/net/minecraft/resources/RegistryDataLoader.java
 +++ b/src/main/java/net/minecraft/resources/RegistryDataLoader.java
-@@ -0,0 +0,0 @@ public class RegistryDataLoader {
-     public static RegistryAccess.Frozen load(
-         ResourceManager resourceManager, List<HolderLookup.RegistryLookup<?>> registries, List<RegistryDataLoader.RegistryData<?>> entries
-     ) {
-        return load((loader, infoGetter) -> loader.loadFromResources(resourceManager, infoGetter), registries, entries);
-+        return load((loader, infoGetter, conversions) -> loader.loadFromResources(resourceManager, infoGetter, conversions), registries, entries); // Paper - pass conversions
-     }
- 
-     public static RegistryAccess.Frozen load(
-@@ -0,0 +0,0 @@ public class RegistryDataLoader {
-         List<HolderLookup.RegistryLookup<?>> registries,
-         List<RegistryDataLoader.RegistryData<?>> entries
-     ) {
-        return load((loader, infoGetter) -> loader.loadFromNetwork(data, factory, infoGetter), registries, entries);
-+        return load((loader, infoGetter, conversions) -> loader.loadFromNetwork(data, factory, infoGetter, conversions), registries, entries); // Paper - pass conversions
-     }
- 
-     private static RegistryAccess.Frozen load(
-@@ -0,0 +0,0 @@ public class RegistryDataLoader {
-         Map<ResourceKey<?>, Exception> map = new HashMap<>();
-         List<RegistryDataLoader.Loader<?>> list = entries.stream().map(entry -> entry.create(Lifecycle.stable(), map)).collect(Collectors.toUnmodifiableList());
-         RegistryOps.RegistryInfoLookup registryInfoLookup = createContext(registries, list);
-        list.forEach(loader -> loadable.apply((RegistryDataLoader.Loader<?>)loader, registryInfoLookup));
-+        final io.papermc.paper.registry.data.util.Conversions conversions = new io.papermc.paper.registry.data.util.Conversions(registryInfoLookup); // Paper - create conversions
-+        list.forEach(loader -> loadable.apply((RegistryDataLoader.Loader<?>)loader, registryInfoLookup, conversions));
-         list.forEach(loader -> {
-             Registry<?> registry = loader.registry();
- 
@@ -0,0 +0,0 @@ public class RegistryDataLoader {
     }
 
     private static <E> void loadElementFromResource(
 -        WritableRegistry<E> registry, Decoder<E> decoder, RegistryOps<JsonElement> ops, ResourceKey<E> key, Resource resource, RegistrationInfo entryInfo
-+        WritableRegistry<E> registry, Decoder<E> decoder, RegistryOps<JsonElement> ops, ResourceKey<E> key, Resource resource, RegistrationInfo entryInfo, io.papermc.paper.registry.data.util.Conversions conversions
+        WritableRegistry<E> registry, Decoder<E> decoder, RegistryOps<JsonElement> ops, ResourceKey<E> key, Resource resource, RegistrationInfo entryInfo, io.papermc.paper.registry.data.util.Conversions conversions // Paper - pass conversions
     ) throws IOException {
         try (Reader reader = resource.openAsReader()) {
             JsonElement jsonElement = JsonParser.parseReader(reader);
@@ -1258,15 +1231,13 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
     }
 
@@ -0,0 +0,0 @@ public class RegistryDataLoader {
-         RegistryOps.RegistryInfoLookup infoGetter,
-         WritableRegistry<E> registry,
-         Decoder<E> elementDecoder,
-        Map<ResourceKey<?>, Exception> errors
-+        Map<ResourceKey<?>, Exception> errors,
-+        io.papermc.paper.registry.data.util.Conversions conversions // Paper - pass conversions
-     ) {
         FileToIdConverter fileToIdConverter = FileToIdConverter.registry(registry.key());
         RegistryOps<JsonElement> registryOps = RegistryOps.create(JsonOps.INSTANCE, infoGetter);
+ 
+        final io.papermc.paper.registry.data.util.Conversions conversions = new io.papermc.paper.registry.data.util.Conversions(infoGetter); // Paper - create conversions
+         for (Entry<ResourceLocation, Resource> entry : fileToIdConverter.listMatchingResources(resourceManager).entrySet()) {
+             ResourceLocation resourceLocation = entry.getKey();
+             ResourceKey<E> resourceKey = ResourceKey.create(registry.key(), fileToIdConverter.fileToId(resourceLocation));
@@ -0,0 +0,0 @@ public class RegistryDataLoader {
             RegistrationInfo registrationInfo = REGISTRATION_INFO_CACHE.apply(resource.knownPackInfo());
 
@@ -1285,15 +1256,13 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
     }
 
@@ -0,0 +0,0 @@ public class RegistryDataLoader {
-         RegistryOps.RegistryInfoLookup infoGetter,
-         WritableRegistry<E> registry,
-         Decoder<E> decoder,
-        Map<ResourceKey<?>, Exception> loadingErrors
-+        Map<ResourceKey<?>, Exception> loadingErrors,
-+        io.papermc.paper.registry.data.util.Conversions conversions // Paper - pass conversions
-     ) {
-         RegistryDataLoader.NetworkedRegistryData networkedRegistryData = data.get(registry.key());
-         if (networkedRegistryData != null) {
+             RegistryOps<JsonElement> registryOps2 = RegistryOps.create(JsonOps.INSTANCE, infoGetter);
+             FileToIdConverter fileToIdConverter = FileToIdConverter.registry(registry.key());
+ 
+            final io.papermc.paper.registry.data.util.Conversions conversions = new io.papermc.paper.registry.data.util.Conversions(infoGetter); // Paper - create conversions
+             for (RegistrySynchronization.PackedRegistryEntry packedRegistryEntry : networkedRegistryData.elements) {
+                 ResourceKey<E> resourceKey = ResourceKey.create(registry.key(), packedRegistryEntry.id());
+                 Optional<Tag> optional = packedRegistryEntry.data();
@@ -0,0 +0,0 @@ public class RegistryDataLoader {
 
                     try {
@@ -1303,35 +1272,6 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
                     } catch (Exception var17) {
                         loadingErrors.put(resourceKey, new IllegalStateException("Failed to parse local data", var17));
                     }
-@@ -0,0 +0,0 @@ public class RegistryDataLoader {
-     }
- 
-     static record Loader<T>(RegistryDataLoader.RegistryData<T> data, WritableRegistry<T> registry, Map<ResourceKey<?>, Exception> loadingErrors) {
-        public void loadFromResources(ResourceManager resourceManager, RegistryOps.RegistryInfoLookup infoGetter) {
-            RegistryDataLoader.loadContentsFromManager(resourceManager, infoGetter, this.registry, this.data.elementCodec, this.loadingErrors);
-+        public void loadFromResources(ResourceManager resourceManager, RegistryOps.RegistryInfoLookup infoGetter, io.papermc.paper.registry.data.util.Conversions conversions) { // Paper - pass conversions
-+            RegistryDataLoader.loadContentsFromManager(resourceManager, infoGetter, this.registry, this.data.elementCodec, this.loadingErrors, conversions); // Paper - pass conversions
-         }
- 
-         public void loadFromNetwork(
-             Map<ResourceKey<? extends Registry<?>>, RegistryDataLoader.NetworkedRegistryData> data,
-             ResourceProvider factory,
-            RegistryOps.RegistryInfoLookup infoGetter
-+            RegistryOps.RegistryInfoLookup infoGetter,
-+            io.papermc.paper.registry.data.util.Conversions conversions // Paper
-         ) {
-            RegistryDataLoader.loadContentsFromNetwork(data, factory, infoGetter, this.registry, this.data.elementCodec, this.loadingErrors);
-+            RegistryDataLoader.loadContentsFromNetwork(data, factory, infoGetter, this.registry, this.data.elementCodec, this.loadingErrors, conversions); // Paper - pass conversions
-         }
-     }
- 
-     @FunctionalInterface
-     interface LoadingFunction {
-        void apply(RegistryDataLoader.Loader<?> loader, RegistryOps.RegistryInfoLookup infoGetter);
-+        void apply(RegistryDataLoader.Loader<?> loader, RegistryOps.RegistryInfoLookup infoGetter, io.papermc.paper.registry.data.util.Conversions conversions); // Paper - pass conversions
-     }
- 
-     public static record NetworkedRegistryData(List<RegistrySynchronization.PackedRegistryEntry> elements, TagNetworkSerialization.NetworkPayload tags) {
 diff --git a/src/main/java/net/minecraft/server/ReloadableServerRegistries.java b/src/main/java/net/minecraft/server/ReloadableServerRegistries.java
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
 --- a/src/main/java/net/minecraft/server/ReloadableServerRegistries.java
@@ -1368,20 +1308,6 @@ diff --git a/src/main/java/org/bukkit/craftbukkit/CraftRegistry.java b/src/main/
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
 --- a/src/main/java/org/bukkit/craftbukkit/CraftRegistry.java
 +++ b/src/main/java/org/bukkit/craftbukkit/CraftRegistry.java
-@@ -0,0 +0,0 @@ public class CraftRegistry<B extends Keyed, M> implements Registry<B> {
-     private final Map<NamespacedKey, B> cache = new HashMap<>();
-     private final Map<B, NamespacedKey> byValue = new java.util.IdentityHashMap<>(); // Paper - improve Registry
-     private final net.minecraft.core.Registry<M> minecraftRegistry;
-    private final BiFunction<NamespacedKey, M, B> minecraftToBukkit;
-+    private final BiFunction<? super NamespacedKey, M, B> minecraftToBukkit; // Paper
-     private final BiFunction<NamespacedKey, ApiVersion, NamespacedKey> serializationUpdater; // Paper - rename to make it *clear* what it is *only* for
-     private boolean init;
- 
-    public CraftRegistry(Class<?> bukkitClass, net.minecraft.core.Registry<M> minecraftRegistry, BiFunction<NamespacedKey, M, B> minecraftToBukkit, BiFunction<NamespacedKey, ApiVersion, NamespacedKey> serializationUpdater) { // Paper - relax preload class
-+    public CraftRegistry(Class<?> bukkitClass, net.minecraft.core.Registry<M> minecraftRegistry, BiFunction<? super NamespacedKey, M, B> minecraftToBukkit, BiFunction<NamespacedKey, ApiVersion, NamespacedKey> serializationUpdater) { // Paper - relax preload class
-         this.bukkitClass = bukkitClass;
-         this.minecraftRegistry = minecraftRegistry;
-         this.minecraftToBukkit = minecraftToBukkit;
@@ -0,0 +0,0 @@ public class CraftRegistry<B extends Keyed, M> implements Registry<B> {
         return this.byValue.get(value);
     }
@@ -1452,7 +1378,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    <M, T> void testEquality(final RegistryEntry.BuilderHolder<M, T, ?> registryEntry) {
 +        final Registry<M> registry = RegistryHelper.getRegistry().lookupOrThrow(registryEntry.mcKey());
 +        for (final Map.Entry<ResourceKey<M>, M> entry : registry.entrySet()) {
-+            final M built = registryEntry.fillBuilder(new Conversions(new RegistryOps.HolderLookupAdapter(RegistryHelper.getRegistry())), PaperRegistries.fromNms(entry.getKey()), entry.getValue()).build();
+            final M built = registryEntry.fillBuilder(new Conversions(new RegistryOps.HolderLookupAdapter(RegistryHelper.getRegistry())), entry.getValue()).build();
 +            assertEquals(entry.getValue(), built);
 +        }
 +    }