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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: masmc05 <masmc05@gmail.com>
Date: Sun, 11 Aug 2024 03:01:52 +0300
Subject: [PATCH] Item serialization as json
diff --git a/src/main/java/net/minecraft/world/item/component/CustomData.java b/src/main/java/net/minecraft/world/item/component/CustomData.java
index c80fd4960dfbb0fde37363e7df25b0a5411bdb11..ff7f6916f65466c25a7bde35d64682c15b211697 100644
--- a/src/main/java/net/minecraft/world/item/component/CustomData.java
+++ b/src/main/java/net/minecraft/world/item/component/CustomData.java
@@ -28,7 +28,17 @@ import org.slf4j.Logger;
public final class CustomData {
private static final Logger LOGGER = LogUtils.getLogger();
public static final CustomData EMPTY = new CustomData(new CompoundTag());
- public static final Codec<CustomData> CODEC = Codec.withAlternative(CompoundTag.CODEC, TagParser.AS_CODEC)
+ // Paper start - Item serialization as json
+ public static ThreadLocal<Boolean> SERIALIZE_CUSTOM_AS_SNBT = ThreadLocal.withInitial(() -> false);
+ public static final Codec<CustomData> CODEC = Codec.either(CompoundTag.CODEC, TagParser.AS_CODEC)
+ .xmap(com.mojang.datafixers.util.Either::unwrap, data -> { // Both will be used for deserialization, but we decide which one to use for serialization
+ if (!SERIALIZE_CUSTOM_AS_SNBT.get()) {
+ return com.mojang.datafixers.util.Either.left(data); // First codec
+ } else {
+ return com.mojang.datafixers.util.Either.right(data); // Second codec
+ }
+ })
+ // Paper end - Item serialization as json
.xmap(CustomData::new, component -> component.tag);
public static final Codec<CustomData> CODEC_WITH_ID = CODEC.validate(
component -> component.getUnsafe().contains("id", 8) ? DataResult.success(component) : DataResult.error(() -> "Missing id for entity in: " + component)
diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
index 15bb55f0b4c60b0519918b910398a0908022128f..ef0ef0872a44eb34fe41358728f3ddcf262297e9 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
@@ -516,6 +516,39 @@ public final class CraftMagicNumbers implements UnsafeValues {
return CraftItemStack.asCraftMirror(net.minecraft.world.item.ItemStack.parse(MinecraftServer.getServer().registryAccess(), compound).orElseThrow());
}
+ @Override
+ public com.google.gson.JsonObject serializeItemAsJson(ItemStack itemStack) {
+ Preconditions.checkNotNull(itemStack, "Cannot serialize empty ItemStack");
+ Preconditions.checkArgument(!itemStack.isEmpty(), "Cannot serialize empty ItemStack");
+
+ net.minecraft.core.RegistryAccess.Frozen reg = net.minecraft.server.MinecraftServer.getServer().registryAccess();
+ com.mojang.serialization.DynamicOps<com.google.gson.JsonElement> ops = reg.createSerializationContext(com.mojang.serialization.JsonOps.INSTANCE);
+ com.google.gson.JsonObject item;
+ // Serialize as SNBT to preserve exact NBT types; vanilla codecs already can handle such deserialization.
+ net.minecraft.world.item.component.CustomData.SERIALIZE_CUSTOM_AS_SNBT.set(true);
+ try {
+ item = net.minecraft.world.item.ItemStack.CODEC.encodeStart(ops, CraftItemStack.unwrap(itemStack)).getOrThrow().getAsJsonObject();
+ } finally {
+ net.minecraft.world.item.component.CustomData.SERIALIZE_CUSTOM_AS_SNBT.set(false);
+ }
+ item.addProperty("DataVersion", this.getDataVersion());
+ return item;
+ }
+
+ @Override
+ public ItemStack deserializeItemFromJson(com.google.gson.JsonObject data) throws IllegalArgumentException {
+ Preconditions.checkNotNull(data, "null cannot be deserialized");
+
+ final int dataVersion = data.get("DataVersion").getAsInt();
+ final int currentVersion = org.bukkit.craftbukkit.util.CraftMagicNumbers.INSTANCE.getDataVersion();
+ data = ca.spottedleaf.dataconverter.minecraft.MCDataConverter.convertJson(
+ ca.spottedleaf.dataconverter.minecraft.datatypes.MCTypeRegistry.ITEM_STACK,
+ data, false, dataVersion, currentVersion
+ );
+ com.mojang.serialization.DynamicOps<com.google.gson.JsonElement> ops = MinecraftServer.getServer().registryAccess().createSerializationContext(com.mojang.serialization.JsonOps.INSTANCE);
+ return CraftItemStack.asCraftMirror(net.minecraft.world.item.ItemStack.CODEC.parse(ops, data).getOrThrow(IllegalArgumentException::new));
+ }
+
@Override
public byte[] serializeEntity(org.bukkit.entity.Entity entity) {
Preconditions.checkNotNull(entity, "null cannot be serialized");
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