package net.minecraft.core;

import org.jspecify.annotations.Nullable;

public interface IdMap<T> extends Iterable<T> {
	int DEFAULT = -1;

	int getId(T thing);

	@Nullable
	T byId(int id);

	default T byIdOrThrow(final int id) {
		T result = this.byId(id);
		if (result == null) {
			throw new IllegalArgumentException("No value with id " + id);
		} else {
			return result;
		}
	}

	default int getIdOrThrow(final T value) {
		int id = this.getId(value);
		if (id == -1) {
			throw new IllegalArgumentException("Can't find id for '" + value + "' in map " + this);
		} else {
			return id;
		}
	}

	int size();
}