Fix #3790 Air should not be displayed in recipes

Author: mezz

Library/src/main/java/mezz/jei/library/ingredients/DisplayIngredientAcceptor.java

@@ -58,7 +58,7 @@ public <T> DisplayIngredientAcceptor addIngredients(IIngredientType<T> ingredien
 		ErrorUtil.checkNotNull(ingredientType, "ingredientType");
 		Preconditions.checkNotNull(ingredients, "ingredients");
 
-		List<Optional<ITypedIngredient<T>>> typedIngredients = TypedIngredient.createUnvalidatedList(ingredientType, ingredients);
+		List<Optional<ITypedIngredient<T>>> typedIngredients = TypedIngredient.createAndFilterInvalidList(ingredientManager, ingredientType, ingredients, false);
 		@SuppressWarnings("unchecked")
 		List<Optional<ITypedIngredient<?>>> castTypedIngredients = (List<Optional<ITypedIngredient<?>>>) (Object) typedIngredients;
 		this.ingredients.addAll(castTypedIngredients);
@@ -70,7 +70,7 @@ public <T> DisplayIngredientAcceptor addIngredients(IIngredientType<T> ingredien
 	public DisplayIngredientAcceptor addIngredients(Ingredient ingredient) {
 		Preconditions.checkNotNull(ingredient, "ingredient");
 
-		List<Optional<ITypedIngredient<ItemStack>>> typedIngredients = TypedIngredient.createUnvalidatedList(ingredient);
+		List<Optional<ITypedIngredient<ItemStack>>> typedIngredients = TypedIngredient.createAndFilterInvalidList(ingredientManager, ingredient, false);
 		@SuppressWarnings("unchecked")
 		List<Optional<ITypedIngredient<?>>> castTypedIngredients = (List<Optional<ITypedIngredient<?>>>) (Object) typedIngredients;
 		this.ingredients.addAll(castTypedIngredients);
@@ -91,7 +91,9 @@ public <T> DisplayIngredientAcceptor addIngredient(IIngredientType<T> ingredient
 	public <I> DisplayIngredientAcceptor addTypedIngredient(ITypedIngredient<I> typedIngredient) {
 		ErrorUtil.checkNotNull(typedIngredient, "typedIngredient");
 
-		this.ingredients.add(Optional.of(typedIngredient));
+		@SuppressWarnings("unchecked")
+		Optional<ITypedIngredient<?>> copy = (Optional<ITypedIngredient<?>>) (Object) TypedIngredient.deepCopy(ingredientManager, typedIngredient);
+		this.ingredients.add(copy);
 
 		return this;
 	}
@@ -150,12 +152,10 @@ public DisplayIngredientAcceptor addOptionalTypedIngredients(List<Optional<IType
 	}
 
 	private <T> void addIngredientInternal(IIngredientType<T> ingredientType, @Nullable T ingredient) {
-		if (ingredient == null) {
-			this.ingredients.add(Optional.empty());
-		} else {
-			ITypedIngredient<T> typedIngredient = TypedIngredient.createUnvalidated(ingredientType, ingredient);
-			this.ingredients.add(Optional.of(typedIngredient));
-		}
+		Optional<ITypedIngredient<T>> result = TypedIngredient.createAndFilterInvalid(ingredientManager, ingredientType, ingredient, false);
+		@SuppressWarnings("unchecked")
+		Optional<ITypedIngredient<?>> castResult = (Optional<ITypedIngredient<?>>) (Object) result;
+		this.ingredients.add(castResult);
 	}
 
 	@UnmodifiableView

Library/src/main/java/mezz/jei/library/ingredients/TypedIngredient.java

@@ -101,29 +101,14 @@ public static <T> List<Optional<ITypedIngredient<T>>> createAndFilterInvalidList
 		return results;
 	}
 
-	public static <T> List<Optional<ITypedIngredient<T>>> createUnvalidatedList(
-		IIngredientType<T> ingredientType,
-		List<@Nullable T> ingredients
-	) {
-		List<Optional<ITypedIngredient<T>>> results = new ArrayList<>(ingredients.size());
-		for (T ingredient : ingredients) {
-			if (ingredient == null) {
-				results.add(Optional.empty());
-			} else {
-				ITypedIngredient<T> result = createUnvalidated(ingredientType, ingredient);
-				results.add(Optional.of(result));
-			}
-		}
-		return results;
-	}
-
-	public static List<Optional<ITypedIngredient<ItemStack>>> createUnvalidatedList(Ingredient ingredient) {
+	public static List<Optional<ITypedIngredient<ItemStack>>> createAndFilterInvalidList(IIngredientManager ingredientManager, Ingredient ingredient, boolean normalize) {
 		ItemStack[] itemStacks = ingredient.getItems();
+		IIngredientHelper<ItemStack> ingredientHelper = ingredientManager.getIngredientHelper(VanillaTypes.ITEM_STACK);
 
 		List<Optional<ITypedIngredient<ItemStack>>> results = new ArrayList<>(itemStacks.length);
 		for (ItemStack itemStack : itemStacks) {
-			ITypedIngredient<ItemStack> result = TypedItemStack.create(itemStack);
-			results.add(Optional.of(result));
+			Optional<ITypedIngredient<ItemStack>> result = createAndFilterInvalid(ingredientHelper, VanillaTypes.ITEM_STACK, itemStack, normalize);
+			results.add(result);
 		}
 		return results;
 	}