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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 15:49:36 -0700
Subject: [PATCH] Fix issues with Recipe API
diff --git a/src/main/java/net/minecraft/world/item/crafting/ShapedRecipe.java b/src/main/java/net/minecraft/world/item/crafting/ShapedRecipe.java
index dd02af6574dd97404bc9c02c9ead84e1dd537efe..980fea65899ef5f37808506b822fd3de5830d2c7 100644
--- a/src/main/java/net/minecraft/world/item/crafting/ShapedRecipe.java
+++ b/src/main/java/net/minecraft/world/item/crafting/ShapedRecipe.java
@@ -98,7 +98,7 @@ public class ShapedRecipe implements CraftingRecipe {
char c = 'a';
for (Optional<Ingredient> list : this.pattern.ingredients()) {
RecipeChoice choice = CraftRecipe.toBukkit(list);
- if (choice != null) {
+ if (choice != RecipeChoice.empty()) { // Paper
recipe.setIngredient(c, choice);
}
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftRecipe.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftRecipe.java
index a30950287646524c4906574d193ec7ce94b4eb34..e89fecf25555195314998e5317baa3a49be61aa3 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftRecipe.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftRecipe.java
@@ -38,6 +38,10 @@ public interface CraftRecipe extends Recipe {
stack = Ingredient.of(((RecipeChoice.MaterialChoice) bukkit).getChoices().stream().map((mat) -> CraftItemType.bukkitToMinecraft(mat)));
} else if (bukkit instanceof RecipeChoice.ExactChoice) {
stack = Ingredient.ofStacks(((RecipeChoice.ExactChoice) bukkit).getChoices().stream().map((mat) -> CraftItemStack.asNMSCopy(mat)).toList());
+ // Paper start - support "empty" choices
+ } else if (bukkit == RecipeChoice.empty()) {
+ stack = Ingredient.of();
+ // Paper end
} else {
throw new IllegalArgumentException("Unknown recipe stack instance " + bukkit);
}
@@ -51,14 +55,14 @@ public interface CraftRecipe extends Recipe {
}
public static RecipeChoice toBukkit(Optional<Ingredient> list) {
- return list.map(CraftRecipe::toBukkit).orElse(null);
+ return list.map(CraftRecipe::toBukkit).orElse(RecipeChoice.empty()); // Paper - fix issue with recipe API
}
public static RecipeChoice toBukkit(Ingredient list) {
List<Holder<Item>> items = list.items();
if (items.isEmpty()) {
- return null;
+ return RecipeChoice.empty(); // Paper - null breaks API contracts
}
if (list.isExact()) {
diff --git a/src/test/java/io/papermc/paper/inventory/recipe/TestRecipeChoice.java b/src/test/java/io/papermc/paper/inventory/recipe/TestRecipeChoice.java
new file mode 100644
index 0000000000000000000000000000000000000000..45ab2b6d32b29cb663df848534e1aa68293dd613
--- /dev/null
+++ b/src/test/java/io/papermc/paper/inventory/recipe/TestRecipeChoice.java
@@ -0,0 +1,25 @@
+package io.papermc.paper.inventory.recipe;
+
+import java.util.Iterator;
+import org.bukkit.Bukkit;
+import org.bukkit.inventory.Recipe;
+import org.bukkit.support.environment.AllFeatures;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+@AllFeatures
+class TestRecipeChoice {
+
+ @Test
+ void testRecipeChoices() {
+ final Iterator<Recipe> iter = Bukkit.recipeIterator();
+ boolean foundRecipes = false;
+ while (iter.hasNext()) {
+ foundRecipes = true;
+ assertDoesNotThrow(iter::next, "Failed to convert a recipe to Bukkit recipe!");
+ }
+ assertTrue(foundRecipes, "No recipes found!");
+ }
+}
diff --git a/src/test/java/org/bukkit/support/DummyServerHelper.java b/src/test/java/org/bukkit/support/DummyServerHelper.java
index 55c05c16a80c489cdda2fd03c943921d38d978e9..309d371247adcddf0a1b370cc5faff3e6e01cb0f 100644
--- a/src/test/java/org/bukkit/support/DummyServerHelper.java
+++ b/src/test/java/org/bukkit/support/DummyServerHelper.java
@@ -92,6 +92,15 @@ public final class DummyServerHelper {
// Paper end - testing additions
io.papermc.paper.configuration.GlobalConfigTestingBase.setupGlobalConfigForTest(); // Paper - configuration files - setup global configuration test base
+
+ // Paper start - add test for recipe conversion
+ when(instance.recipeIterator()).thenAnswer(ignored ->
+ com.google.common.collect.Iterators.transform(
+ RegistryHelper.getDataPack().getRecipeManager().recipes.byType.entries().iterator(),
+ input -> input.getValue().toBukkitRecipe()
+ )
+ );
+ // Paper end - add test for recipe conversion
return instance;
}
}
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