From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Tue, 28 Jan 2014 19:13:57 -0500
Subject: [PATCH] Add ItemStack Recipe API helper methods

Allows using ExactChoice Recipes with easier methods

Redirects some of upstream's APIs to these new methods to avoid
usage of magic values and the deprecated RecipeChoice#getItemStack

diff --git a/src/main/java/org/bukkit/inventory/RecipeChoice.java b/src/main/java/org/bukkit/inventory/RecipeChoice.java
index 6734bc9d7a6eee8ee40419ae3fe245b67eabaca6..db8bcc66bdc4bedfffb4705db6338eda4c0ad29a 100644
--- a/src/main/java/org/bukkit/inventory/RecipeChoice.java
+++ b/src/main/java/org/bukkit/inventory/RecipeChoice.java
@@ -146,8 +146,6 @@ public interface RecipeChoice extends Predicate<ItemStack>, Cloneable {
     /**
      * Represents a choice that will be valid only if one of the stacks is
      * exactly matched (aside from stack size).
-     * <br>
-     * <b>Only valid for shaped recipes</b>
      */
     public static class ExactChoice implements RecipeChoice {
 
diff --git a/src/main/java/org/bukkit/inventory/ShapedRecipe.java b/src/main/java/org/bukkit/inventory/ShapedRecipe.java
index 71e494177473c62449aafda1699b26a0c4c81a68..97d5d9c6347bc401e3f4ab7c0ba1391ad5b0449a 100644
--- a/src/main/java/org/bukkit/inventory/ShapedRecipe.java
+++ b/src/main/java/org/bukkit/inventory/ShapedRecipe.java
@@ -168,6 +168,13 @@ public class ShapedRecipe extends CraftingRecipe {
         return this;
     }
 
+    // Paper start
+    @NotNull
+    public ShapedRecipe setIngredient(char key, @NotNull ItemStack item) {
+        return setIngredient(key, new RecipeChoice.ExactChoice(item));
+    }
+    // Paper end
+
     /**
      * Get a copy of the ingredients map.
      *
diff --git a/src/main/java/org/bukkit/inventory/ShapelessRecipe.java b/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
index d6e38c7ccfe3b6e85eafb611da20b1a29fb74d97..b8ac602cd2718d615ec243ce648951a1a46c26ec 100644
--- a/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
+++ b/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
@@ -131,6 +131,40 @@ public class ShapelessRecipe extends CraftingRecipe {
         return this;
     }
 
+    // Paper start
+    @NotNull
+    public ShapelessRecipe addIngredient(@NotNull ItemStack item) {
+        return addIngredient(item.getAmount(), item);
+    }
+
+    @NotNull
+    public ShapelessRecipe addIngredient(int count, @NotNull ItemStack item) {
+        Preconditions.checkArgument(ingredients.size() + count <= 9, "Shapeless recipes cannot have more than 9 ingredients");
+        while (count-- > 0) {
+            ingredients.add(new RecipeChoice.ExactChoice(item));
+        }
+        return this;
+    }
+
+    @NotNull
+    public ShapelessRecipe removeIngredient(@NotNull ItemStack item) {
+        return removeIngredient(1, item);
+    }
+
+    @NotNull
+    public ShapelessRecipe removeIngredient(int count, @NotNull ItemStack item) {
+        Iterator<RecipeChoice> iterator = ingredients.iterator();
+        while (count > 0 && iterator.hasNext()) {
+            RecipeChoice choice = iterator.next();
+            if (choice.test(item)) {
+                iterator.remove();
+                count--;
+            }
+        }
+        return this;
+    }
+    // Paper end
+
     /**
      * Removes an ingredient from the list.
      *
@@ -154,7 +188,7 @@ public class ShapelessRecipe extends CraftingRecipe {
      */
     @NotNull
     public ShapelessRecipe removeIngredient(@NotNull Material ingredient) {
-        return removeIngredient(ingredient, 0);
+        return removeIngredient(new ItemStack(ingredient)); // Paper - avoid using deprecated methods (magic values; RecipeChoice#getItemStack)
     }
 
     /**
@@ -181,7 +215,7 @@ public class ShapelessRecipe extends CraftingRecipe {
      */
     @NotNull
     public ShapelessRecipe removeIngredient(int count, @NotNull Material ingredient) {
-        return removeIngredient(count, ingredient, 0);
+        return removeIngredient(count, new ItemStack(ingredient)); // Paper - avoid using deprecated methods (magic values; RecipeChoice#getItemStack)
     }
 
     /**