More more more more work

patches/server/0119-Optimize-ItemStack.isEmpty.patch

@@ -0,0 +1,20 @@
+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 4019a8cd594f8c093cf790600a92f0725250e82b..6c82bb01db0431080425bfa65ab67ce703194214 100644
+--- a/src/main/java/net/minecraft/world/item/ItemStack.java
++++ b/src/main/java/net/minecraft/world/item/ItemStack.java
+@@ -240,7 +240,7 @@ public final class ItemStack {
+     }
+ 
+     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
+     }
+ 
+     public ItemStack split(int amount) {