42 lines
1.1 KiB
Java
42 lines
1.1 KiB
Java
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package net.minecraft.client.multiplayer;
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import java.util.function.Function;
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import javax.annotation.Nullable;
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import net.minecraftforge.api.distmarker.Dist;
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import net.minecraftforge.api.distmarker.OnlyIn;
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@OnlyIn(Dist.CLIENT)
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public class CacheSlot<C extends CacheSlot.Cleaner<C>, D> {
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private final Function<C, D> operation;
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@Nullable
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private C context;
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@Nullable
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private D value;
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public CacheSlot(Function<C, D> p_395525_) {
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this.operation = p_395525_;
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}
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public D compute(C p_393567_) {
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if (p_393567_ == this.context && this.value != null) {
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return this.value;
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} else {
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D d = this.operation.apply(p_393567_);
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this.value = d;
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this.context = p_393567_;
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p_393567_.registerForCleaning(this);
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return d;
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}
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}
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public void clear() {
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this.value = null;
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this.context = null;
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}
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@FunctionalInterface
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@OnlyIn(Dist.CLIENT)
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public interface Cleaner<C extends CacheSlot.Cleaner<C>> {
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void registerForCleaning(CacheSlot<C, ?> p_396785_);
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}
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}
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