PaperMC/patches/server/0550-Optimize-Dynamic-get-Missing-Keys.patch

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2021-06-11 14:02:28 +02:00
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 21 Dec 2020 11:01:42 -0500
Subject: [PATCH] Optimize Dynamic#get Missing Keys
get was calling toString() on every NBT object that was ever asked for an optional
key from the object to build a string for the error text.
When done on large NBT objects, this was using a ton of computation time building the
JSON representation of the NBT object.
Now we will just skip the value when 99.9999% of the time the text is never even printed.
diff --git a/src/main/java/com/mojang/serialization/Dynamic.java b/src/main/java/com/mojang/serialization/Dynamic.java
index a75d3db046dc985a03b4b870c91f41de1bd66bad..044facc9de9e8e582d7953d681c0c051578979c3 100644
--- a/src/main/java/com/mojang/serialization/Dynamic.java
+++ b/src/main/java/com/mojang/serialization/Dynamic.java
@@ -17,6 +17,7 @@ import java.util.stream.Stream;
@SuppressWarnings("unused")
public class Dynamic<T> extends DynamicLike<T> {
+ private static final boolean DEBUG_MISSING_KEYS = Boolean.getBoolean("Paper.debugDynamicMissingKeys"); // Paper
private final T value;
public Dynamic(final DynamicOps<T> ops) {
@@ -113,7 +114,7 @@ public class Dynamic<T> extends DynamicLike<T> {
return new OptionalDynamic<>(ops, ops.getMap(value).flatMap(m -> {
final T value = m.get(key);
if (value == null) {
- return DataResult.error("key missing: " + key + " in " + this.value);
+ return DataResult.error(DEBUG_MISSING_KEYS ? "key missing: " + key + " in " + this.value : "key missing: " + key); // Paper
}
return DataResult.success(new Dynamic<>(ops, value));
}));