PaperMC/paper-server/patches/sources/com/mojang/serialization/Dynamic.java.patch
Aikar 3f4b9fd365 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.
2020-12-21 11:01:42 -05:00

19 lines
970 B
Diff

--- a/com/mojang/serialization/Dynamic.java
+++ b/com/mojang/serialization/Dynamic.java
@@ -19,6 +19,7 @@
@SuppressWarnings("unused")
public class Dynamic<T> extends DynamicLike<T> {
+ private static final boolean DEBUG_MISSING_KEYS = Boolean.getBoolean("Paper.debugDynamicMissingKeys"); // Paper - Perf: Skip toString on values like NBT
private final T value;
public Dynamic(final DynamicOps<T> ops) {
@@ -120,7 +121,7 @@
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 - Perf: Skip toString on values like NBT
}
return DataResult.success(new Dynamic<>(ops, value));
}));