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CoroutineUtil.kt
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CoroutineUtil.kt
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/*
* Copyright 2017 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.kotlin.experimental.coroutine
import kotlinx.coroutines.CoroutineDispatcher
import kotlinx.coroutines.channels.ReceiveChannel
import org.springframework.util.ClassUtils
import java.lang.reflect.Method
import kotlin.coroutines.CoroutineContext
import kotlin.reflect.KClass
import kotlin.reflect.jvm.kotlinFunction
val Method.isSuspend: Boolean
get() = kotlinFunction?.isSuspend ?: false
internal object NewThreadCoroutineDispatcher: CoroutineDispatcher() {
override fun dispatch(context: CoroutineContext, block: Runnable) =
Thread {
block.run()
}.start()
}
@Suppress("UNCHECKED_CAST")
internal fun <T> Array<T>.removeLastValue(): Array<T> =
copyOf(size - 1) as Array<T>
internal fun <T> Array<T>.setLast(value: T): Unit {
this[lastIndex] = value
}
val Class<*>.isCoroutineCollection: Boolean
get() = this === ReceiveChannel::class.java || isArray || ClassUtils.isAssignable(Iterable::class.java, this)
data class TypeMetaData(
val clazz: Class<*>,
val clazzArg: Class<*>?
) {
val domainClazz: Class<*>
get() = clazzArg?.takeIf { clazz.isCoroutineCollection } ?: clazz
}
val Method.returnTypeMetadata: TypeMetaData
get() {
val rt = kotlinFunction?.returnType
val clazz = (rt?.classifier as? KClass<*>)?.java ?: returnType
val clazzArg = (rt?.arguments?.firstOrNull()?.type?.classifier as? KClass<*>)?.java
return TypeMetaData(clazz, clazzArg)
}