minecraft-src/net/minecraft/server/Bootstrap.java

package net.minecraft.server;

import com.mojang.logging.LogUtils;
import java.io.PrintStream;
import java.time.Duration;
import java.time.Instant;
import java.util.Set;
import java.util.TreeSet;
import java.util.concurrent.atomic.AtomicLong;
import java.util.function.Function;
import java.util.function.Supplier;
import net.minecraft.SharedConstants;
import net.minecraft.SuppressForbidden;
import net.minecraft.commands.Commands;
import net.minecraft.commands.arguments.selector.options.EntitySelectorOptions;
import net.minecraft.core.cauldron.CauldronInteraction;
import net.minecraft.core.dispenser.DispenseItemBehavior;
import net.minecraft.core.registries.BuiltInRegistries;
import net.minecraft.locale.Language;
import net.minecraft.world.effect.MobEffect;
import net.minecraft.world.entity.EntityType;
import net.minecraft.world.entity.ai.attributes.Attribute;
import net.minecraft.world.entity.ai.attributes.DefaultAttributes;
import net.minecraft.world.flag.FeatureFlags;
import net.minecraft.world.item.CreativeModeTabs;
import net.minecraft.world.item.Item;
import net.minecraft.world.level.GameRules;
import net.minecraft.world.level.block.ComposterBlock;
import net.minecraft.world.level.block.FireBlock;
import net.minecraft.world.level.block.state.BlockBehaviour;
import org.slf4j.Logger;

@SuppressForbidden(
	reason = "System.out setup"
)
public class Bootstrap {
	public static final PrintStream STDOUT = System.out;
	/**
	 * Whether the blocks, items, etc have already been registered
	 */
	private static volatile boolean isBootstrapped;
	private static final Logger LOGGER = LogUtils.getLogger();
	public static final AtomicLong bootstrapDuration = new AtomicLong(-1L);

	/**
	 * Registers blocks, items, stats, etc.
	 */
	public static void bootStrap() {
		if (!isBootstrapped) {
			isBootstrapped = true;
			Instant instant = Instant.now();
			if (BuiltInRegistries.REGISTRY.keySet().isEmpty()) {
				throw new IllegalStateException("Unable to load registries");
			} else {
				FireBlock.bootStrap();
				ComposterBlock.bootStrap();
				if (EntityType.getKey(EntityType.PLAYER) == null) {
					throw new IllegalStateException("Failed loading EntityTypes");
				} else {
					EntitySelectorOptions.bootStrap();
					DispenseItemBehavior.bootStrap();
					CauldronInteraction.bootStrap();
					BuiltInRegistries.bootStrap();
					CreativeModeTabs.validate();
					wrapStreams();
					bootstrapDuration.set(Duration.between(instant, Instant.now()).toMillis());
				}
			}
		}
	}

	private static <T> void checkTranslations(Iterable<T> objects, Function<T, String> objectToKeyFunction, Set<String> translationSet) {
		Language language = Language.getInstance();
		objects.forEach(object -> {
			String string = (String)objectToKeyFunction.apply(object);
			if (!language.has(string)) {
				translationSet.add(string);
			}
		});
	}

	private static void checkGameruleTranslations(Set<String> translations) {
		final Language language = Language.getInstance();
		GameRules gameRules = new GameRules(FeatureFlags.REGISTRY.allFlags());
		gameRules.visitGameRuleTypes(new GameRules.GameRuleTypeVisitor() {
			@Override
			public <T extends GameRules.Value<T>> void visit(GameRules.Key<T> key, GameRules.Type<T> type) {
				if (!language.has(key.getDescriptionId())) {
					translations.add(key.getId());
				}
			}
		});
	}

	public static Set<String> getMissingTranslations() {
		Set<String> set = new TreeSet();
		checkTranslations(BuiltInRegistries.ATTRIBUTE, Attribute::getDescriptionId, set);
		checkTranslations(BuiltInRegistries.ENTITY_TYPE, EntityType::getDescriptionId, set);
		checkTranslations(BuiltInRegistries.MOB_EFFECT, MobEffect::getDescriptionId, set);
		checkTranslations(BuiltInRegistries.ITEM, Item::getDescriptionId, set);
		checkTranslations(BuiltInRegistries.BLOCK, BlockBehaviour::getDescriptionId, set);
		checkTranslations(BuiltInRegistries.CUSTOM_STAT, resourceLocation -> "stat." + resourceLocation.toString().replace(':', '.'), set);
		checkGameruleTranslations(set);
		return set;
	}

	public static void checkBootstrapCalled(Supplier<String> callSite) {
		if (!isBootstrapped) {
			throw createBootstrapException(callSite);
		}
	}

	private static RuntimeException createBootstrapException(Supplier<String> callSite) {
		try {
			String string = (String)callSite.get();
			return new IllegalArgumentException("Not bootstrapped (called from " + string + ")");
		} catch (Exception var3) {
			RuntimeException runtimeException = new IllegalArgumentException("Not bootstrapped (failed to resolve location)");
			runtimeException.addSuppressed(var3);
			return runtimeException;
		}
	}

	public static void validate() {
		checkBootstrapCalled(() -> "validate");
		if (SharedConstants.IS_RUNNING_IN_IDE) {
			getMissingTranslations().forEach(string -> LOGGER.error("Missing translations: {}", string));
			Commands.validate();
		}

		DefaultAttributes.validate();
	}

	/**
	 * Redirect standard streams to logger.
	 */
	private static void wrapStreams() {
		if (LOGGER.isDebugEnabled()) {
			System.setErr(new DebugLoggedPrintStream("STDERR", System.err));
			System.setOut(new DebugLoggedPrintStream("STDOUT", STDOUT));
		} else {
			System.setErr(new LoggedPrintStream("STDERR", System.err));
			System.setOut(new LoggedPrintStream("STDOUT", STDOUT));
		}
	}

	public static void realStdoutPrintln(String message) {
		STDOUT.println(message);
	}
}