Throws an `IllegalStateException` on `NullMessageChain.followedBy`

8fe13e0a · Him188 · 944afd78 · 8fe13e0a
Commit 8fe13e0a authored Apr 05, 2020 by Him188
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mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/MessageChain.kt ...nMain/kotlin/net.mamoe.mirai/message/data/MessageChain.kt +1 -1

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--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/MessageChain.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/MessageChain.kt
@@ -431,7 +431,7 @@ object NullMessageChain : MessageChain {

    @OptIn(MiraiInternalAPI::class)
    @Suppress("DEPRECATION_ERROR")
-    override fun followedBy(tail: Message): CombinedMessage = CombinedMessage(left = EmptyMessageChain, tail = tail)
+    override fun followedBy(tail: Message): CombinedMessage = error("accessing NullMessageChain")
    override fun iterator(): MutableIterator<SingleMessage> = error("accessing NullMessageChain")
 }