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Improve performance

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This commit is contained in:
Him188 2020-04-20 17:08:45 +08:00
parent c4b3eade4a
commit 162dfb7c71
1 changed files with 9 additions and 8 deletions
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17
mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/CombinedMessage.kt
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@ -34,7 +34,7 @@ internal constructor(
@JvmField internal val left: Message, // 必须已经完成 constrain single
@JvmField internal val tail: Message
) : Message, MessageChain {
@OptIn(MiraiExperimentalAPI::class)
fun asSequence(): Sequence<SingleMessage> = sequence {
yieldCombinedOrElementsFlatten(this@CombinedMessage)
}
@ -43,12 +43,13 @@ internal constructor(
return asSequence().iterator()
}
override val size: Int by lazy {
var size = 0
size += if (left is MessageChain) left.size else 1
size += if (tail is MessageChain) tail.size else 1
size
}
override val size: Int
get() = kotlin.run {
var size = 0
size += if (left is MessageChain) left.size else 1
size += if (tail is MessageChain) tail.size else 1
size
}
override fun equals(other: Any?): Boolean {
return other is CombinedMessage && other.left == this.left && other.tail == this.tail
@ -76,7 +77,7 @@ internal constructor(
private suspend fun SequenceScope<SingleMessage>.yieldCombinedOrElementsFlatten(message: Message) {
when (message) {
is CombinedMessage -> {
// fast path, 避免创建新的 iterator, 也不会挂起协程
// fast path
yieldCombinedOrElementsFlatten(message.left)
yieldCombinedOrElementsFlatten(message.tail)
}