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Paper/patches/api/0469-Fix-issues-with-recipe-API.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sun, 12 May 2024 10:42:42 -0700
Subject: [PATCH] Fix issues with recipe API
Improves the validation when creating recipes
and RecipeChoices to closer match what is
allowed by the Codecs and StreamCodecs internally.
Adds RecipeChoice#empty which is allowed in specific
recipes and ingredient slots.
Also fixes some issues regarding mutability of both ItemStack
and implementations of RecipeChoice.
diff --git a/src/main/java/org/bukkit/inventory/CookingRecipe.java b/src/main/java/org/bukkit/inventory/CookingRecipe.java
index f7fa79393aef40027446b78bac8e9490cfafd8bc..07906ca1a9b39fcc6774870daa498402f7f37917 100644
--- a/src/main/java/org/bukkit/inventory/CookingRecipe.java
+++ b/src/main/java/org/bukkit/inventory/CookingRecipe.java
@@ -44,10 +44,10 @@ public abstract class CookingRecipe<T extends CookingRecipe> implements Recipe,
* @param cookingTime The cooking time (in ticks)
*/
public CookingRecipe(@NotNull NamespacedKey key, @NotNull ItemStack result, @NotNull RecipeChoice input, float experience, int cookingTime) {
- Preconditions.checkArgument(result.getType() != Material.AIR, "Recipe must have non-AIR result.");
+ Preconditions.checkArgument(!result.isEmpty(), "Recipe cannot have an empty result."); // Paper
this.key = key;
this.output = new ItemStack(result);
- this.ingredient = input;
+ this.ingredient = input.validate(false).clone(); // Paper
this.experience = experience;
this.cookingTime = cookingTime;
}
@@ -84,7 +84,7 @@ public abstract class CookingRecipe<T extends CookingRecipe> implements Recipe,
*/
@NotNull
public T setInputChoice(@NotNull RecipeChoice input) {
- this.ingredient = input;
+ this.ingredient = input.validate(false).clone(); // Paper
return (T) this;
}
diff --git a/src/main/java/org/bukkit/inventory/CraftingRecipe.java b/src/main/java/org/bukkit/inventory/CraftingRecipe.java
index e4bf772f7e06f38215bee68f089b15a4fcb12817..37024b4736dd3897490ca51d08cf07901b01d59f 100644
--- a/src/main/java/org/bukkit/inventory/CraftingRecipe.java
+++ b/src/main/java/org/bukkit/inventory/CraftingRecipe.java
@@ -18,7 +18,7 @@ public abstract class CraftingRecipe implements Recipe, Keyed {
protected CraftingRecipe(@NotNull NamespacedKey key, @NotNull ItemStack result) {
Preconditions.checkArgument(key != null, "key cannot be null");
- Preconditions.checkArgument(result.getType() != Material.AIR, "Recipe must have non-AIR result.");
+ Preconditions.checkArgument(!result.isEmpty(), "Recipe cannot have an empty result."); // Paper
this.key = key;
this.output = new ItemStack(result);
}
diff --git a/src/main/java/org/bukkit/inventory/EmptyRecipeChoice.java b/src/main/java/org/bukkit/inventory/EmptyRecipeChoice.java
new file mode 100644
index 0000000000000000000000000000000000000000..ed0ab6163f47ec843ba4f7ea4a98bb2fa315eaa1
--- /dev/null
+++ b/src/main/java/org/bukkit/inventory/EmptyRecipeChoice.java
@@ -0,0 +1,33 @@
+package org.bukkit.inventory;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.framework.qual.DefaultQualifier;
+import org.jetbrains.annotations.ApiStatus;
+
+@ApiStatus.Internal
+@DefaultQualifier(NonNull.class)
+record EmptyRecipeChoice() implements RecipeChoice {
+
+ static final RecipeChoice INSTANCE = new EmptyRecipeChoice();
+ @Override
+ public ItemStack getItemStack() {
+ throw new UnsupportedOperationException("This is an empty RecipeChoice");
+ }
+
+ @SuppressWarnings("MethodDoesntCallSuperMethod")
+ @Override
+ public RecipeChoice clone() {
+ return this;
+ }
+
+ @Override
+ public boolean test(final ItemStack itemStack) {
+ return false;
+ }
+
+ @Override
+ public RecipeChoice validate(final boolean allowEmptyRecipes) {
+ if (allowEmptyRecipes) return this;
+ throw new IllegalArgumentException("empty RecipeChoice isn't allowed here");
+ }
+}
diff --git a/src/main/java/org/bukkit/inventory/MerchantRecipe.java b/src/main/java/org/bukkit/inventory/MerchantRecipe.java
index 39f9766a03d420340d79841197f75c8b1dd49f4a..4e59f5176fd6cf92457ad750081c253a58790b61 100644
--- a/src/main/java/org/bukkit/inventory/MerchantRecipe.java
+++ b/src/main/java/org/bukkit/inventory/MerchantRecipe.java
@@ -79,6 +79,7 @@ public class MerchantRecipe implements Recipe {
this(result, uses, maxUses, experienceReward, villagerExperience, priceMultiplier, 0, 0, ignoreDiscounts);
}
public MerchantRecipe(@NotNull ItemStack result, int uses, int maxUses, boolean experienceReward, int villagerExperience, float priceMultiplier, int demand, int specialPrice, boolean ignoreDiscounts) {
+ Preconditions.checkArgument(!result.isEmpty(), "Recipe cannot have an empty result."); // Paper
this.ignoreDiscounts = ignoreDiscounts;
// Paper end
this.result = result;
@@ -101,11 +102,12 @@ public class MerchantRecipe implements Recipe {
@NotNull
@Override
public ItemStack getResult() {
- return result;
+ return result.clone(); // Paper
}
public void addIngredient(@NotNull ItemStack item) {
Preconditions.checkState(ingredients.size() < 2, "MerchantRecipe can only have maximum 2 ingredients");
+ Preconditions.checkArgument(!item.isEmpty(), "Recipe cannot have an empty itemstack ingredient."); // Paper
ingredients.add(item.clone());
}
@@ -117,6 +119,7 @@ public class MerchantRecipe implements Recipe {
Preconditions.checkState(ingredients.size() <= 2, "MerchantRecipe can only have maximum 2 ingredients");
this.ingredients = new ArrayList<ItemStack>();
for (ItemStack item : ingredients) {
+ Preconditions.checkArgument(!item.isEmpty(), "Recipe cannot have an empty itemstack ingredient."); // Paper
this.ingredients.add(item.clone());
}
}
diff --git a/src/main/java/org/bukkit/inventory/RecipeChoice.java b/src/main/java/org/bukkit/inventory/RecipeChoice.java
index 91bfeffcdbe47208c7d0ddbe013cd0f11fddfa32..e7796054f3f65f5bea7f93c75320195f6c2f0561 100644
--- a/src/main/java/org/bukkit/inventory/RecipeChoice.java
+++ b/src/main/java/org/bukkit/inventory/RecipeChoice.java
@@ -22,6 +22,19 @@ import org.jetbrains.annotations.NotNull;
*/
public interface RecipeChoice extends Predicate<ItemStack>, Cloneable {
+ // Paper start - add "empty" choice
+ /**
+ * An "empty" recipe choice. Only valid as a recipe choice in
+ * specific places. Check the javadocs of a method before using it
+ * to be sure it's valid for that recipe and ingredient type.
+ *
+ * @return the empty recipe choice
+ */
+ static @NotNull RecipeChoice empty() {
+ return EmptyRecipeChoice.INSTANCE;
+ }
+ // Paper end
+
/**
* Gets a single item stack representative of this stack choice.
*
@@ -38,6 +51,13 @@ public interface RecipeChoice extends Predicate<ItemStack>, Cloneable {
@Override
boolean test(@NotNull ItemStack itemStack);
+ // Paper start - check valid ingredients
+ @org.jetbrains.annotations.ApiStatus.Internal
+ default @NotNull RecipeChoice validate(final boolean allowEmptyRecipes) {
+ return this;
+ }
+ // Paper end - check valid ingredients
+
/**
* Represents a choice of multiple matching Materials.
*/
@@ -152,6 +172,16 @@ public interface RecipeChoice extends Predicate<ItemStack>, Cloneable {
public String toString() {
return "MaterialChoice{" + "choices=" + choices + '}';
}
+
+ // Paper start - check valid ingredients
+ @Override
+ public @NotNull RecipeChoice validate(final boolean allowEmptyRecipes) {
+ if (this.choices.stream().anyMatch(Material::isAir)) {
+ throw new IllegalArgumentException("RecipeChoice.MaterialChoice cannot contain air");
+ }
+ return this;
+ }
+ // Paper end - check valid ingredients
}
/**
@@ -197,7 +227,12 @@ public interface RecipeChoice extends Predicate<ItemStack>, Cloneable {
public ExactChoice clone() {
try {
ExactChoice clone = (ExactChoice) super.clone();
- clone.choices = new ArrayList<>(choices);
+ // Paper start - properly clone
+ clone.choices = new ArrayList<>(this.choices.size());
+ for (ItemStack choice : this.choices) {
+ clone.choices.add(choice.clone());
+ }
+ // Paper end - properly clone
return clone;
} catch (CloneNotSupportedException ex) {
throw new AssertionError(ex);
@@ -244,5 +279,15 @@ public interface RecipeChoice extends Predicate<ItemStack>, Cloneable {
public String toString() {
return "ExactChoice{" + "choices=" + choices + '}';
}
+
+ // Paper start - check valid ingredients
+ @Override
+ public @NotNull RecipeChoice validate(final boolean allowEmptyRecipes) {
+ if (this.choices.stream().anyMatch(s -> s.getType().isAir())) {
+ throw new IllegalArgumentException("RecipeChoice.ExactChoice cannot contain air");
+ }
+ return this;
+ }
+ // Paper end - check valid ingredients
}
}
diff --git a/src/main/java/org/bukkit/inventory/ShapedRecipe.java b/src/main/java/org/bukkit/inventory/ShapedRecipe.java
index aa3b3070126f1c492f004ec7599eeb379b58f207..1815de38654dd134abde3dd9bd0b018b91247bd5 100644
--- a/src/main/java/org/bukkit/inventory/ShapedRecipe.java
+++ b/src/main/java/org/bukkit/inventory/ShapedRecipe.java
@@ -177,14 +177,15 @@ public class ShapedRecipe extends CraftingRecipe {
Preconditions.checkArgument(key != ' ', "Space in recipe shape must represent no ingredient");
Preconditions.checkArgument(ingredients.containsKey(key), "Symbol does not appear in the shape:", key);
- ingredients.put(key, ingredient);
+ ingredients.put(key, ingredient.validate(false).clone()); // Paper
return this;
}
// Paper start
@NotNull
public ShapedRecipe setIngredient(char key, @NotNull ItemStack item) {
- return setIngredient(key, new RecipeChoice.ExactChoice(item));
+ Preconditions.checkArgument(!item.getType().isAir(), "Item cannot be air"); // Paper
+ return setIngredient(key, new RecipeChoice.ExactChoice(item.clone())); // Paper
}
// Paper end
diff --git a/src/main/java/org/bukkit/inventory/ShapelessRecipe.java b/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
index beb798482479c58a8628c314b510ab6349576ce8..8251170314ab25c26270208e453b4e3909435754 100644
--- a/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
+++ b/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
@@ -131,7 +131,7 @@ public class ShapelessRecipe extends CraftingRecipe {
public ShapelessRecipe addIngredient(@NotNull RecipeChoice ingredient) {
Preconditions.checkArgument(ingredients.size() + 1 <= 9, "Shapeless recipes cannot have more than 9 ingredients");
- ingredients.add(ingredient);
+ ingredients.add(ingredient.validate(false).clone()); // Paper
return this;
}
@@ -144,6 +144,8 @@ public class ShapelessRecipe extends CraftingRecipe {
@NotNull
public ShapelessRecipe addIngredient(int count, @NotNull ItemStack item) {
Preconditions.checkArgument(ingredients.size() + count <= 9, "Shapeless recipes cannot have more than 9 ingredients");
+ Preconditions.checkArgument(!item.getType().isAir(), "Item cannot be air"); // Paper
+ item = item.clone(); // Paper
while (count-- > 0) {
ingredients.add(new RecipeChoice.ExactChoice(item));
}
diff --git a/src/main/java/org/bukkit/inventory/SmithingRecipe.java b/src/main/java/org/bukkit/inventory/SmithingRecipe.java
index 1ef9a715a2736e88a16083c6873803a8bd6bcf29..3072858dd4413129ec1737572838c2ea5ffd84bc 100644
--- a/src/main/java/org/bukkit/inventory/SmithingRecipe.java
+++ b/src/main/java/org/bukkit/inventory/SmithingRecipe.java
@@ -44,12 +44,13 @@ public class SmithingRecipe implements Recipe, Keyed {
*/
@Deprecated
public SmithingRecipe(@NotNull NamespacedKey key, @NotNull ItemStack result, @NotNull RecipeChoice base, @NotNull RecipeChoice addition, boolean copyDataComponents) {
+ com.google.common.base.Preconditions.checkArgument(!result.isEmpty() || this instanceof ComplexRecipe, "Recipe cannot have an empty result."); // Paper
this.copyDataComponents = copyDataComponents;
// Paper end
this.key = key;
this.result = result;
- this.base = base;
- this.addition = addition;
+ this.base = base.validate(true).clone(); // Paper
+ this.addition = addition.validate(true).clone(); // Paper
}
/**
diff --git a/src/main/java/org/bukkit/inventory/SmithingTransformRecipe.java b/src/main/java/org/bukkit/inventory/SmithingTransformRecipe.java
index 68e7132d77151b7b8312638d8bb79ea59e2fa5a6..60bfdd6b8814be8e3ffdfaef8a5ac7eeff9a5830 100644
--- a/src/main/java/org/bukkit/inventory/SmithingTransformRecipe.java
+++ b/src/main/java/org/bukkit/inventory/SmithingTransformRecipe.java
@@ -15,13 +15,13 @@ public class SmithingTransformRecipe extends SmithingRecipe {
*
* @param key The unique recipe key
* @param result The item you want the recipe to create.
- * @param template The template item.
- * @param base The base ingredient
- * @param addition The addition ingredient
+ * @param template The template item ({@link RecipeChoice#empty()} can be used)
+ * @param base The base ingredient ({@link RecipeChoice#empty()} can be used)
+ * @param addition The addition ingredient ({@link RecipeChoice#empty()} can be used)
*/
public SmithingTransformRecipe(@NotNull NamespacedKey key, @NotNull ItemStack result, @NotNull RecipeChoice template, @NotNull RecipeChoice base, @NotNull RecipeChoice addition) {
super(key, result, base, addition);
- this.template = template;
+ this.template = template.validate(true).clone(); // Paper
}
// Paper start
/**
@@ -29,14 +29,14 @@ public class SmithingTransformRecipe extends SmithingRecipe {
*
* @param key The unique recipe key
* @param result The item you want the recipe to create.
- * @param template The template item.
- * @param base The base ingredient
- * @param addition The addition ingredient
+ * @param template The template item ({@link RecipeChoice#empty()} can be used)
+ * @param base The base ingredient ({@link RecipeChoice#empty()} can be used)
+ * @param addition The addition ingredient ({@link RecipeChoice#empty()} can be used)
* @param copyDataComponents whether to copy the data components from the input base item to the output
*/
public SmithingTransformRecipe(@NotNull NamespacedKey key, @NotNull ItemStack result, @NotNull RecipeChoice template, @NotNull RecipeChoice base, @NotNull RecipeChoice addition, boolean copyDataComponents) {
super(key, result, base, addition, copyDataComponents);
- this.template = template;
+ this.template = template.validate(true).clone();
}
// Paper end
diff --git a/src/main/java/org/bukkit/inventory/SmithingTrimRecipe.java b/src/main/java/org/bukkit/inventory/SmithingTrimRecipe.java
index ce36bb5b030f17e11f74e987235be143c1925aa7..9ac27cbe7dcff0403ef34727d0461b8201aca6f1 100644
--- a/src/main/java/org/bukkit/inventory/SmithingTrimRecipe.java
+++ b/src/main/java/org/bukkit/inventory/SmithingTrimRecipe.java
@@ -15,27 +15,27 @@ public class SmithingTrimRecipe extends SmithingRecipe implements ComplexRecipe
* Create a smithing recipe to produce the specified result ItemStack.
*
* @param key The unique recipe key
- * @param template The template item.
- * @param base The base ingredient
- * @param addition The addition ingredient
+ * @param template The template item ({@link RecipeChoice#empty()} can be used)
+ * @param base The base ingredient ({@link RecipeChoice#empty()} can be used)
+ * @param addition The addition ingredient ({@link RecipeChoice#empty()} can be used)
*/
public SmithingTrimRecipe(@NotNull NamespacedKey key, @NotNull RecipeChoice template, @NotNull RecipeChoice base, @NotNull RecipeChoice addition) {
super(key, new ItemStack(Material.AIR), base, addition);
- this.template = template;
+ this.template = template.validate(true).clone(); // Paper
}
// Paper start
/**
* Create a smithing recipe to produce the specified result ItemStack.
*
* @param key The unique recipe key
- * @param template The template item.
- * @param base The base ingredient
- * @param addition The addition ingredient
+ * @param template The template item. ({@link RecipeChoice#empty()} can be used)
+ * @param base The base ingredient ({@link RecipeChoice#empty()} can be used)
+ * @param addition The addition ingredient ({@link RecipeChoice#empty()} can be used)
* @param copyDataComponents whether to copy the data components from the input base item to the output
*/
public SmithingTrimRecipe(@NotNull NamespacedKey key, @NotNull RecipeChoice template, @NotNull RecipeChoice base, @NotNull RecipeChoice addition, boolean copyDataComponents) {
super(key, new ItemStack(Material.AIR), base, addition, copyDataComponents);
- this.template = template;
+ this.template = template.validate(true).clone(); // Paper
}
// Paper end
diff --git a/src/main/java/org/bukkit/inventory/StonecuttingRecipe.java b/src/main/java/org/bukkit/inventory/StonecuttingRecipe.java
index bc3440eb72127824b3961fbdae583bb61385f65e..17b33f8e6e3dc6a22686a498fa944382e8767077 100644
--- a/src/main/java/org/bukkit/inventory/StonecuttingRecipe.java
+++ b/src/main/java/org/bukkit/inventory/StonecuttingRecipe.java
@@ -35,10 +35,10 @@ public class StonecuttingRecipe implements Recipe, Keyed {
* @param input The input choices.
*/
public StonecuttingRecipe(@NotNull NamespacedKey key, @NotNull ItemStack result, @NotNull RecipeChoice input) {
- Preconditions.checkArgument(result.getType() != Material.AIR, "Recipe must have non-AIR result.");
+ Preconditions.checkArgument(!result.isEmpty(), "Recipe cannot have an empty result."); // Paper
this.key = key;
this.output = new ItemStack(result);
- this.ingredient = input;
+ this.ingredient = input.validate(false).clone(); // Paper
}
/**
@@ -73,7 +73,7 @@ public class StonecuttingRecipe implements Recipe, Keyed {
*/
@NotNull
public StonecuttingRecipe setInputChoice(@NotNull RecipeChoice input) {
- this.ingredient = input;
+ this.ingredient = input.validate(false).clone(); // Paper
return (StonecuttingRecipe) this;
}
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