PersistentRegistryManager.java 文件源码

public static void revertToFrozen()
{
    if (!PersistentRegistry.FROZEN.isPopulated())
    {
        FMLLog.warning("Can't revert to frozen GameData state without freezing first.");
        return;
    }
    else
    {
        FMLLog.fine("Reverting to frozen data state.");
    }
    for (Map.Entry<ResourceLocation, FMLControlledNamespacedRegistry<?>> r : PersistentRegistry.ACTIVE.registries.entrySet())
    {
        final Class<? extends IForgeRegistryEntry> registrySuperType = PersistentRegistry.ACTIVE.getRegistrySuperType(r.getKey());
        loadRegistry(r.getKey(), PersistentRegistry.FROZEN, PersistentRegistry.ACTIVE, registrySuperType);
    }
    // the id mapping has reverted, fire remap events for those that care about id changes
    Loader.instance().fireRemapEvent(ImmutableMap.<ResourceLocation, Integer[]>of(), ImmutableMap.<ResourceLocation, Integer[]>of(), true);

    // the id mapping has reverted, ensure we sync up the object holders
    ObjectHolderRegistry.INSTANCE.applyObjectHolders();
    FMLLog.fine("Frozen state restored.");
}