Paper/patches/server/0120-Optimize-ItemStack.isEmpty.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 21 Dec 2016 03:48:29 -0500
Subject: [PATCH] Optimize ItemStack.isEmpty()
Remove hashMap lookup every check, simplify code to remove ternary
diff --git a/src/main/java/net/minecraft/world/item/ItemStack.java b/src/main/java/net/minecraft/world/item/ItemStack.java
index 7f44e9e382aa87ad9be94394d05bbcacfb0bacc8..d921113214e7bf3693e80d417f3c5ae217500e7a 100644
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--- a/src/main/java/net/minecraft/world/item/ItemStack.java
+++ b/src/main/java/net/minecraft/world/item/ItemStack.java
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@@ -239,7 +239,7 @@ public final class ItemStack {
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}
public boolean isEmpty() {
- return this == ItemStack.EMPTY ? true : (this.getItem() != null && !this.is(Items.AIR) ? this.count <= 0 : true);
+ return this == ItemStack.EMPTY || this.item == null || this.item == Items.AIR || this.count <= 0; // Paper
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}
public ItemStack split(int amount) {