46 lines
1.7 KiB
Java
46 lines
1.7 KiB
Java
package net.minecraft.network.chat;
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import com.google.common.primitives.Ints;
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import com.mojang.serialization.Codec;
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import com.mojang.serialization.codecs.RecordCodecBuilder;
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import java.security.SignatureException;
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import java.util.UUID;
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import net.minecraft.Util;
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import net.minecraft.core.UUIDUtil;
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import net.minecraft.util.ExtraCodecs;
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import net.minecraft.util.SignatureUpdater;
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import org.jetbrains.annotations.Nullable;
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public record SignedMessageLink(int index, UUID sender, UUID sessionId) {
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public static final Codec<SignedMessageLink> CODEC = RecordCodecBuilder.create(
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instance -> instance.group(
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ExtraCodecs.NON_NEGATIVE_INT.fieldOf("index").forGetter(SignedMessageLink::index),
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UUIDUtil.CODEC.fieldOf("sender").forGetter(SignedMessageLink::sender),
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UUIDUtil.CODEC.fieldOf("session_id").forGetter(SignedMessageLink::sessionId)
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)
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.apply(instance, SignedMessageLink::new)
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);
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public static SignedMessageLink unsigned(UUID sender) {
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return root(sender, Util.NIL_UUID);
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}
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public static SignedMessageLink root(UUID sender, UUID sessionId) {
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return new SignedMessageLink(0, sender, sessionId);
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}
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public void updateSignature(SignatureUpdater.Output output) throws SignatureException {
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output.update(UUIDUtil.uuidToByteArray(this.sender));
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output.update(UUIDUtil.uuidToByteArray(this.sessionId));
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output.update(Ints.toByteArray(this.index));
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}
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public boolean isDescendantOf(SignedMessageLink other) {
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return this.index > other.index() && this.sender.equals(other.sender()) && this.sessionId.equals(other.sessionId());
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}
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@Nullable
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public SignedMessageLink advance() {
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return this.index == Integer.MAX_VALUE ? null : new SignedMessageLink(this.index + 1, this.sender, this.sessionId);
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}
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}
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