From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: tr7zw <tr7zw@live.de>
Date: Mon, 11 May 2020 21:37:44 +0200
Subject: [PATCH] lithium enum_values


diff --git a/src/main/java/net/minecraft/server/BlockPiston.java b/src/main/java/net/minecraft/server/BlockPiston.java
index 4f10ca5ada741b4f5ef941bb9d92a2fa6a7c44ff..7f2ee293a0206d01e44dfffe2a0714719c86712a 100644
--- a/src/main/java/net/minecraft/server/BlockPiston.java
+++ b/src/main/java/net/minecraft/server/BlockPiston.java
@@ -128,8 +128,9 @@ public class BlockPiston extends BlockDirectional {
 
     }
 
+    private final static EnumDirection[] aenumdirection = EnumDirection.values(); // YAPFA - don't recreate
+    
     private boolean a(World world, BlockPosition blockposition, EnumDirection enumdirection) {
-        EnumDirection[] aenumdirection = EnumDirection.values();
         int i = aenumdirection.length;
 
         int j;
@@ -146,12 +147,11 @@ public class BlockPiston extends BlockDirectional {
             return true;
         } else {
             BlockPosition blockposition1 = blockposition.up();
-            EnumDirection[] aenumdirection1 = EnumDirection.values();
 
-            j = aenumdirection1.length;
+            j = aenumdirection.length;
 
             for (int k = 0; k < j; ++k) {
-                EnumDirection enumdirection2 = aenumdirection1[k];
+                EnumDirection enumdirection2 = aenumdirection[k];
 
                 if (enumdirection2 != EnumDirection.DOWN && world.isBlockFacePowered(blockposition1.shift(enumdirection2), enumdirection2)) {
                     return true;
diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java
index a1819225ea0c3ceb677877586c7b9176ffd36a4d..2e879c7f95f2db5dd44e3e1c6879d4f12bf3d408 100644
--- a/src/main/java/net/minecraft/server/EntityLiving.java
+++ b/src/main/java/net/minecraft/server/EntityLiving.java
@@ -2563,10 +2563,14 @@ public abstract class EntityLiving extends Entity {
 
     }
 
+     /**
+     * @reason Avoid cloning enum values
+     */
+    private final static EnumItemSlot[] aenumitemslot = EnumItemSlot.values();
+
     @Nullable
     private Map<EnumItemSlot, ItemStack> r() {
         Map<EnumItemSlot, ItemStack> map = null;
-        EnumItemSlot[] aenumitemslot = EnumItemSlot.values();
         int i = aenumitemslot.length;
 
         for (int j = 0; j < i; ++j) {
diff --git a/src/main/java/net/minecraft/server/PistonExtendsChecker.java b/src/main/java/net/minecraft/server/PistonExtendsChecker.java
index dd64aad1ed6c2acf360e757bf0369da5fcf6be41..18a136213565794addf35511de23e078065af5f2 100644
--- a/src/main/java/net/minecraft/server/PistonExtendsChecker.java
+++ b/src/main/java/net/minecraft/server/PistonExtendsChecker.java
@@ -167,9 +167,11 @@ public class PistonExtendsChecker {
         this.f.addAll(list2);
     }
 
+    private final static EnumDirection[] aenumdirection = EnumDirection.values(); // YAPFA - don't recreate
+    
     private boolean a(BlockPosition blockposition) {
         IBlockData iblockdata = this.a.getType(blockposition);
-        EnumDirection[] aenumdirection = EnumDirection.values();
+
         int i = aenumdirection.length;
 
         for (int j = 0; j < i; ++j) {