Paper/patches/api/0170-Add-ItemStack-Recipe-API-helper-methods.patch

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 methodss

diff --git a/src/main/java/org/bukkit/inventory/ShapedRecipe.java b/src/main/java/org/bukkit/inventory/ShapedRecipe.java
index ad2ab6e97ccf6900d19f8bfbe08181d4c7743a99..ecf8cd763ae600c11be6385ea6240e4d2c08abc9 100644
--- a/src/main/java/org/bukkit/inventory/ShapedRecipe.java
+++ b/src/main/java/org/bukkit/inventory/ShapedRecipe.java
@@ -144,6 +144,13 @@ public class ShapedRecipe implements Recipe, Keyed {
         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 75b47c608d0a902e4ea5f03c395667f47dec8980..ff5a0e378a7c1e0f89d81144629251dc61af6355 100644
--- a/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
+++ b/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
@@ -142,6 +142,40 @@ public class ShapelessRecipe implements Recipe, Keyed {
         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()) {
+            ItemStack stack = iterator.next().getItemStack();
+            if (stack.equals(item)) {
+                iterator.remove();
+                count--;
+            }
+        }
+        return this;
+    }
+    // Paper end
+
     /**
      * Removes an ingredient from the list.
      *