SparklyPaperMC/patches/server/0009-Remove-iterators-from-inventory-contains.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Paul Sauve <paul@technove.co>
Date: Sat, 13 Mar 2021 12:24:41 -0600
Subject: [PATCH] Remove iterators from inventory contains


diff --git a/src/main/java/net/minecraft/world/entity/player/Inventory.java b/src/main/java/net/minecraft/world/entity/player/Inventory.java
index c7e16e96633e17b951f0681599c5b3efc3ce1e6c..8d329bca0818033df41fbd781028919c73e052a6 100644
--- a/src/main/java/net/minecraft/world/entity/player/Inventory.java
+++ b/src/main/java/net/minecraft/world/entity/player/Inventory.java
@@ -688,6 +688,8 @@ public class Inventory implements Container, Nameable {
     }
 
     public boolean contains(ItemStack stack) {
+        // Airplane start - don't allocate iterators
+        /*
         Iterator iterator = this.compartments.iterator();
 
         while (iterator.hasNext()) {
@@ -702,6 +704,18 @@ public class Inventory implements Container, Nameable {
                 }
             }
         }
+         */
+        for (int i = 0; i < this.compartments.size(); i++) {
+            List<ItemStack> list = this.compartments.get(i);
+            for (int j = 0; j < list.size(); j++) {
+                ItemStack itemstack1 = list.get(j);
+
+                if (!itemstack1.isEmpty() && itemstack1.sameItem(stack)) {
+                    return true;
+                }
+            }
+        }
+        // Airplane end
 
         return false;
     }