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Added unsafe data casts for all platforms and safeCast for JVM

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This commit is contained in:
Alexander Nozik 2019-09-11 22:44:56 +03:00
parent b730d49e6e
commit 352b98be9b
6 changed files with 47 additions and 33 deletions
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25
dataforge-data/src/commonMain/kotlin/hep/dataforge/data/Data.kt
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@ -4,6 +4,7 @@ import hep.dataforge.meta.EmptyMeta
import hep.dataforge.meta.Meta
import hep.dataforge.meta.MetaRepr
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Deferred
import kotlin.coroutines.CoroutineContext
import kotlin.coroutines.EmptyCoroutineContext
import kotlin.reflect.KClass
@ -34,7 +35,7 @@ interface Data<out T : Any> : Goal<T>, MetaRepr {
block: suspend CoroutineScope.() -> T
): Data<T> = DynamicData(type, meta, context, dependencies, block)
operator inline fun <reified T : Any> invoke(
inline operator fun <reified T : Any> invoke(
meta: Meta = EmptyMeta,
context: CoroutineContext = EmptyCoroutineContext,
dependencies: Collection<Data<*>> = emptyList(),
@ -50,7 +51,7 @@ interface Data<out T : Any> : Goal<T>, MetaRepr {
block: suspend CoroutineScope.() -> T
): Data<T> = NamedData(name, invoke(type, meta, context, dependencies, block))
operator inline fun <reified T : Any> invoke(
inline operator fun <reified T : Any> invoke(
name: String,
meta: Meta = EmptyMeta,
context: CoroutineContext = EmptyCoroutineContext,
@ -65,7 +66,7 @@ interface Data<out T : Any> : Goal<T>, MetaRepr {
}
fun <R : Any, T : R> Data<T>.cast(type: KClass<R>): Data<R> {
fun <R : Any, T : R> Data<T>.upcast(type: KClass<out R>): Data<R> {
return object : Data<R> by this {
override val type: KClass<out R> = type
}
@ -74,8 +75,24 @@ fun <R : Any, T : R> Data<T>.cast(type: KClass<R>): Data<R> {
/**
* Upcast a [Data] to a supertype
*/
inline fun <reified R : Any, T : R> Data<T>.cast(): Data<R> = cast(R::class)
inline fun <reified R : Any, T : R> Data<T>.upcast(): Data<R> = upcast(R::class)
/**
* Unsafe cast of data node
*/
@Suppress("UNCHECKED_CAST")
fun <R: Any> Data<*>.cast(type: KClass<out R>): Data<R>{
return object : Data<R> {
override val meta: Meta get() = this@cast.meta
override val dependencies: Collection<Goal<*>> get() = this@cast.dependencies
override val result: Deferred<R>? get() = this@cast.result as Deferred<R>
override fun startAsync(scope: CoroutineScope): Deferred<R> = this@cast.startAsync(scope) as Deferred<R>
override fun reset() = this@cast.reset()
override val type: KClass<out R> = type
}
}
inline fun <reified R : Any, T : R> Data<T>.cast(): Data<R> = cast(R::class)
class DynamicData<T : Any>(
override val type: KClass<out T>,

2
dataforge-data/src/commonMain/kotlin/hep/dataforge/data/DataNode.kt
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@ -72,7 +72,7 @@ operator fun <T : Any> DataNode<T>.get(name: Name): DataItem<T>? = when (name.le
else -> get(name.first()!!.asName()).node?.get(name.cutFirst())
}
operator fun <T : Any> DataNode<T>.get(name: String): DataItem<T>? = get(name.toString())
operator fun <T : Any> DataNode<T>.get(name: String): DataItem<T>? = get(name.toName())
/**
* Sequence of all children including nodes

31
dataforge-data/src/jvmMain/kotlin/hep/dataforge/data/CastDataNode.kt
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@ -1,32 +1,21 @@
package hep.dataforge.data
import hep.dataforge.meta.Meta
import hep.dataforge.names.NameToken
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Deferred
import kotlin.reflect.KClass
import kotlin.reflect.full.isSubclassOf
@Suppress("UNCHECKED_CAST")
fun <T : Any, R : Any> Data<T>.safeCast(type: KClass<out R>): Data<R>? {
return if (this.type.isSubclassOf(type)) {
return object : Data<R> {
override val meta: Meta get() = this@safeCast.meta
override val dependencies: Collection<Goal<*>> get() = this@safeCast.dependencies
override val result: Deferred<R>? get() = this@safeCast.result as Deferred<R>
override fun startAsync(scope: CoroutineScope): Deferred<R> = this@safeCast.startAsync(scope) as Deferred<R>
override fun reset() = this@safeCast.reset()
override val type: KClass<out R> = type
}
} else {
null
}
}
inline fun <reified R : Any> Data<*>.safeCast(): Data<R>? = safeCast(R::class)
fun <T : Any, R : Any> Data<T>.canCast(type: KClass<out R>): Boolean =
this.type.isSubclassOf(type)
fun <T : Any, R : Any> Data<T>.safeCast(type: KClass<out R>): Data<R>? =
if (canCast(type)) cast(type) else null
//inline fun <reified R : Any> Data<*>.safeCast(): Data<R>? = safeCast(R::class)
class CastDataNode<out T : Any>(val origin: DataNode<Any>, override val type: KClass<out T>) : DataNode<T> {
override val items: Map<NameToken, DataItem<T>> by lazy {
override val items: Map<NameToken, DataItem<T>> by lazy {
origin.items.mapNotNull { (key, item) ->
when (item) {
is DataItem.Leaf -> {
@ -35,7 +24,7 @@ class CastDataNode<out T : Any>(val origin: DataNode<Any>, override val type: KC
}
}
is DataItem.Node -> {
key to DataItem.Node(item.value.cast(type))
key to DataItem.Node(item.value.safeCast(type))
}
}
}.associate { it }

16
dataforge-data/src/jvmMain/kotlin/hep/dataforge/data/dataJVM.kt
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@ -12,7 +12,7 @@ fun <T : Any> Data<T>.get(): T = runBlocking { await() }
/**
* Check that node is compatible with given type meaning that each element could be cast to the type
*/
actual fun <T: Any> DataNode<*>.checkType(type: KClass<out T>) {
actual fun <T : Any> DataNode<*>.checkType(type: KClass<out T>) {
if (!type.isSuperclassOf(type)) {
error("$type expected, but $type received")
}
@ -22,12 +22,20 @@ actual fun <T: Any> DataNode<*>.checkType(type: KClass<out T>) {
* Filter a node by data and node type. Resulting node and its subnodes is guaranteed to have border type [type],
* but could contain empty nodes
*/
fun <T : Any, R : Any> DataNode<T>.cast(type: KClass<out R>): DataNode<R> {
fun <R : Any> DataNode<*>.safeCast(type: KClass<out R>): DataNode<R> {
return if (this is CastDataNode) {
origin.cast(type)
origin.safeCast(type)
} else {
CastDataNode(this, type)
}
}
inline fun <T : Any, reified R : Any> DataNode<T>.cast(): DataNode<R> = cast(R::class)
inline fun <reified R : Any> DataNode<*>.cast(): DataNode<R> = safeCast(R::class)
fun <R : Any> DataItem<*>?.safeCast(type: KClass<out R>): DataItem<R>? = when (this) {
null -> null
is DataItem.Node -> DataItem.Node(this.value.safeCast(type))
is DataItem.Leaf -> DataItem.Leaf(
this.value.safeCast(type) ?: error("Can't cast data with type ${this.value.type} to $type")
)
}

4
dataforge-io/src/jvmTest/kotlin/hep/dataforge/io/tcp/EnvelopeServerTest.kt
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@ -43,10 +43,9 @@ class EnvelopeServerTest {
}
}
@Test
fun doEchoTest() {
val client = EnvelopeClient(Global, host = "localhost", port = 7778)
val request = Envelope.build {
type = "test.echo"
meta {
@ -56,6 +55,7 @@ class EnvelopeServerTest {
writeDouble(22.7)
}
}
val client = EnvelopeClient(Global, host = "localhost", port = 7778)
runBlocking {
val response = client.respond(request)

2
dataforge-workspace/src/jvmMain/kotlin/hep/dataforge/workspace/TaskBuilder.kt
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@ -49,7 +49,7 @@ class TaskBuilder(val name: String) {
dataTransforms += DataTransformation(from, to) { context, model, data ->
data.checkType(inputType)
val env = TaskEnv(EmptyName, model.meta, context)
env.block(data.cast(inputType))
env.block(data.safeCast(inputType))
}
}