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SPIGOT-7637: Bad logic in checking nullability of AttributeModifier slots

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Also fix Class loading order issues, which resulted in EquipmentSlot#getGroup returning null, since EquipmentSlot and EquipmentSlotGroup referencing each other on class init.
This caused EquipmentSlot to being init first, when the fields in EquipmentSlotGroup are still null, resulting in the group being null.

By: DerFrZocker <derrieple@gmail.com>
This commit is contained in:
Bukkit/Spigot
2024-04-25 21:06:52 +02:00
parent 1ba56ce1ca
commit c30ea3a2d3
2 changed files with 14 additions and 12 deletions
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21
paper-api/src/main/java/org/bukkit/inventory/EquipmentSlot.java
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@@ -1,24 +1,25 @@
package org.bukkit.inventory;
import java.util.function.Supplier;
import org.jetbrains.annotations.ApiStatus;
import org.jetbrains.annotations.NotNull;
public enum EquipmentSlot {
HAND(EquipmentSlotGroup.MAINHAND),
OFF_HAND(EquipmentSlotGroup.OFFHAND),
FEET(EquipmentSlotGroup.FEET),
LEGS(EquipmentSlotGroup.LEGS),
CHEST(EquipmentSlotGroup.CHEST),
HEAD(EquipmentSlotGroup.HEAD),
HAND(() -> EquipmentSlotGroup.MAINHAND),
OFF_HAND(() -> EquipmentSlotGroup.OFFHAND),
FEET(() -> EquipmentSlotGroup.FEET),
LEGS(() -> EquipmentSlotGroup.LEGS),
CHEST(() -> EquipmentSlotGroup.CHEST),
HEAD(() -> EquipmentSlotGroup.HEAD),
/**
* Only for certain entities such as horses and wolves.
*/
BODY(EquipmentSlotGroup.ARMOR);
BODY(() -> EquipmentSlotGroup.ARMOR);
private final EquipmentSlotGroup group;
private final Supplier<EquipmentSlotGroup> group; // Supplier because of class loading order, since EquipmentSlot and EquipmentSlotGroup reference each other on class init
private EquipmentSlot(/*@NotNull*/ EquipmentSlotGroup group) {
private EquipmentSlot(/*@NotNull*/ Supplier<EquipmentSlotGroup> group) {
this.group = group;
}
@@ -30,6 +31,6 @@ public enum EquipmentSlot {
@NotNull
@ApiStatus.Internal
public EquipmentSlotGroup getGroup() {
return group;
return group.get();
}
}