Added AnvilReceipts from BE

src/main/java/ru/bclib/util/ItemUtil.java

@@ -0,0 +1,76 @@
+package ru.bclib.util;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import com.google.gson.JsonObject;
+
+import net.minecraft.core.Registry;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.util.GsonHelper;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+import ru.bclib.BCLib;
+
+public class ItemUtil {
+	
+	public static String toStackString(@NotNull ItemStack stack) {
+		try {
+			if (stack == null) {
+				throw new IllegalStateException("Stack can't be null!");
+			}
+			Item item = stack.getItem();
+			return Registry.ITEM.getKey(item) + ":" + stack.getCount();
+		}
+		catch (Exception ex) {
+			BCLib.LOGGER.error("ItemStack serialization error!", ex);
+		}
+		return "";
+	}
+	
+	@Nullable
+	public static ItemStack fromStackString(String stackString) {
+		if (stackString == null || stackString.equals("")) {
+			return null;
+		}
+		try {
+			String[] parts = stackString.split(":");
+			if (parts.length < 2) return null;
+			if (parts.length == 2) {
+				ResourceLocation itemId = new ResourceLocation(stackString);
+				Item item = Registry.ITEM.getOptional(itemId).orElseThrow(() -> {
+					return new IllegalStateException("Output item " + itemId + " does not exists!");
+				});
+				return new ItemStack(item);
+			}
+			ResourceLocation itemId = new ResourceLocation(parts[0], parts[1]);
+			Item item = Registry.ITEM.getOptional(itemId).orElseThrow(() -> {
+				return new IllegalStateException("Output item " + itemId + " does not exists!");
+			});
+			return new ItemStack(item, Integer.valueOf(parts[2]));
+		}
+		catch (Exception ex) {
+			BCLib.LOGGER.error("ItemStack deserialization error!", ex);
+		}
+		return null;
+	}
+	
+	@Nullable
+	public static ItemStack fromJsonRecipe(JsonObject recipe) {
+		try {
+			if (!recipe.has("item")) {
+				throw new IllegalStateException("Invalid JsonObject. Entry 'item' does not exists!");
+			}
+			ResourceLocation itemId = new ResourceLocation(GsonHelper.getAsString(recipe, "item"));
+			Item item = Registry.ITEM.getOptional(itemId).orElseThrow(() -> {
+				return new IllegalStateException("Output item " + itemId + " does not exists!");
+			});
+			int count = GsonHelper.getAsInt(recipe, "count", 1);
+			return new ItemStack(item, count);
+		}
+		catch (Exception ex) {
+			BCLib.LOGGER.error("ItemStack deserialization error!", ex);
+		}
+		return null;
+	}
+}

src/main/java/ru/bclib/util/RecipeHelper.java

@@ -0,0 +1,25 @@
+package ru.bclib.util;
+
+import net.minecraft.core.Registry;
+import net.minecraft.world.level.ItemLike;
+import net.minecraft.world.level.block.Block;
+
+public class RecipeHelper {
+	public static boolean exists(ItemLike item) {
+		if (item instanceof Block) {
+			return Registry.BLOCK.getKey((Block) item) != Registry.BLOCK.getDefaultKey();
+		}
+		else {
+			return Registry.ITEM.getKey(item.asItem()) != Registry.ITEM.getDefaultKey();
+		}
+	}
+	
+	public static boolean exists(ItemLike... items) {
+		for (ItemLike item : items) {
+			if (!exists(item)) {
+				return false;
+			}
+		}
+		return true;
+	}
+}