PaperMC/patches/api/0067-ensureServerConversions-API.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 4 May 2016 23:55:48 -0400
Subject: [PATCH] ensureServerConversions API

This will take a Bukkit ItemStack and run it through any conversions a server process would perform on it,
to ensure it meets latest minecraft expectations.

diff --git a/src/main/java/org/bukkit/inventory/ItemFactory.java b/src/main/java/org/bukkit/inventory/ItemFactory.java
index aea393247c60037fb70cd8d5b8814c9849c85e03..b6b90f2ef735407ac41efa21371cfd6b07c2c66e 100644
--- a/src/main/java/org/bukkit/inventory/ItemFactory.java
+++ b/src/main/java/org/bukkit/inventory/ItemFactory.java
@@ -251,4 +251,18 @@ public interface ItemFactory {
     @Deprecated
     String getI18NDisplayName(@Nullable ItemStack item);
     // Paper end - add getI18NDisplayName
+
+    // Paper start - ensure server conversions API
+    /**
+     * Minecraft's updates are converting simple item stacks into more complex NBT oriented Item Stacks.
+     *
+     * Use this method to ensure any desired data conversions are processed.
+     * The input itemstack will not be the same as the returned itemstack.
+     *
+     * @param item The item to process conversions on
+     * @return A potentially Data-Converted-ItemStack
+     */
+    @NotNull
+    ItemStack ensureServerConversions(@NotNull ItemStack item);
+    // Paper end - ensure server conversions API
 }
diff --git a/src/main/java/org/bukkit/inventory/ItemStack.java b/src/main/java/org/bukkit/inventory/ItemStack.java
index 551f31fc91b91702b3093bec20113bee9660a3ec..76b6c21c68bc55d28b77dd53c988b40c9ae41258 100644
--- a/src/main/java/org/bukkit/inventory/ItemStack.java
+++ b/src/main/java/org/bukkit/inventory/ItemStack.java
@@ -559,7 +559,7 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
             }
         }
 
-        return result;
+        return result.ensureServerConversions(); // Paper
     }
 
     /**
@@ -641,6 +641,19 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
         return Bukkit.getServer().getItemFactory().displayName(this);
     }
 
+    /**
+     * Minecraft updates are converting simple item stacks into more complex NBT oriented Item Stacks.
+     *
+     * Use this method to ensure any desired data conversions are processed.
+     * The input itemstack will not be the same as the returned itemstack.
+     *
+     * @return A potentially Data Converted ItemStack
+     */
+    @NotNull
+    public ItemStack ensureServerConversions() {
+        return Bukkit.getServer().getItemFactory().ensureServerConversions(this);
+    }
+
     /**
      * Gets the Display name as seen in the Client.
      * Currently the server only supports the English language. To override this,