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Refactor MetaItem delegates.

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This commit is contained in:
Alexander Nozik 2020-09-07 16:19:57 +03:00
parent eeb4643d93
commit 87af89b47d
4 changed files with 122 additions and 140 deletions
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47
dataforge-meta/src/commonMain/kotlin/hep/dataforge/meta/ItemDelegate.kt
View File

@ -5,26 +5,47 @@ import hep.dataforge.names.Name
import hep.dataforge.names.asName
import hep.dataforge.values.Value
import kotlin.properties.ReadOnlyProperty
import kotlin.reflect.KProperty
/* Meta delegates */
//TODO to be replaced in 1.4 by interfaces
open class ItemDelegate(
open val owner: ItemProvider,
val key: Name? = null,
open val default: MetaItem<*>? = null
) : ReadOnlyProperty<Any?, MetaItem<*>?> {
override fun getValue(thisRef: Any?, property: KProperty<*>): MetaItem<*>? {
return owner.getItem(key ?: property.name.asName()) ?: default
}
}
public fun ItemProvider.item(key: Name? = null): ItemDelegate = ItemDelegate(this, key)
public typealias ItemDelegate = ReadOnlyProperty<Any?, MetaItem<*>?>
public fun ItemProvider.item(key: Name? = null): ItemDelegate = ReadOnlyProperty { _, property ->
getItem(key ?: property.name.asName())
}
//TODO add caching for sealed nodes
//Read-only delegates for Metas
/**
* Apply a converter to this delegate creating a delegate with a custom type
*/
public fun <R : Any> ItemDelegate.convert(
converter: MetaConverter<R>,
): ReadOnlyProperty<Any?, R?> = ReadOnlyProperty { thisRef, property ->
this@convert.getValue(thisRef, property)?.let(converter::itemToObject)
}
/*
*
*/
public fun <R : Any> ItemDelegate.convert(
converter: MetaConverter<R>,
default: () -> R,
): ReadOnlyProperty<Any?, R> = ReadOnlyProperty<Any?, R> { thisRef, property ->
this@convert.getValue(thisRef, property)?.let(converter::itemToObject) ?: default()
}
/**
* A converter with a custom reader transformation
*/
public fun <R> ItemDelegate.convert(
reader: (MetaItem<*>?) -> R,
): ReadOnlyProperty<Any?, R> = ReadOnlyProperty<Any?, R> { thisRef, property ->
this@convert.getValue(thisRef, property).let(reader)
}
/* Read-only delegates for Metas */
/**
* A property delegate that uses custom key

129
dataforge-meta/src/commonMain/kotlin/hep/dataforge/meta/MutableItemDelegate.kt
View File

@ -12,103 +12,148 @@ import kotlin.reflect.KProperty
/* Read-write delegates */
open class MutableItemDelegate(
override val owner: MutableItemProvider,
key: Name? = null,
default: MetaItem<*>? = null
) : ItemDelegate(owner, key, default), ReadWriteProperty<Any?, MetaItem<*>?> {
public typealias MutableItemDelegate = ReadWriteProperty<Any?, MetaItem<*>?>
public fun MutableItemProvider.item(key: Name? = null): MutableItemDelegate = object :MutableItemDelegate {
override fun getValue(thisRef: Any?, property: KProperty<*>): MetaItem<*>? {
return getItem(key ?: property.name.asName())
}
override fun setValue(thisRef: Any?, property: KProperty<*>, value: MetaItem<*>?) {
val name = key ?: property.name.asName()
owner.setItem(name, value)
setItem(name, value)
}
//MutableItemDelegate(this, key)
}
/* Mutable converters */
/**
* A type converter for a mutable [MetaItem] delegate
*/
public fun <R : Any> MutableItemDelegate.convert(
converter: MetaConverter<R>,
): ReadWriteProperty<Any?, R?> = object : ReadWriteProperty<Any?, R?> {
override fun getValue(thisRef: Any?, property: KProperty<*>): R? =
this@convert.getValue(thisRef, property)?.let(converter::itemToObject)
override fun setValue(thisRef: Any?, property: KProperty<*>, value: R?) {
val item = value?.let(converter::objectToMetaItem)
this@convert.setValue(thisRef, property, item)
}
}
fun MutableItemProvider.item(key: Name? = null): MutableItemDelegate =
MutableItemDelegate(this, key)
public fun <R : Any> MutableItemDelegate.convert(
converter: MetaConverter<R>,
default: () -> R,
): ReadWriteProperty<Any?, R> = object : ReadWriteProperty<Any?, R> {
//Read-write delegates
override fun getValue(thisRef: Any?, property: KProperty<*>): R =
this@convert.getValue(thisRef, property)?.let(converter::itemToObject) ?: default()
override fun setValue(thisRef: Any?, property: KProperty<*>, value: R) {
val item = value.let(converter::objectToMetaItem)
this@convert.setValue(thisRef, property, item)
}
}
public fun <R> MutableItemDelegate.convert(
reader: (MetaItem<*>?) -> R,
writer: (R) -> MetaItem<*>?,
): ReadWriteProperty<Any?, R> = object : ReadWriteProperty<Any?, R> {
override fun getValue(thisRef: Any?, property: KProperty<*>): R =
this@convert.getValue(thisRef, property).let(reader)
override fun setValue(thisRef: Any?, property: KProperty<*>, value: R) {
val item = value?.let(writer)
this@convert.setValue(thisRef, property, item)
}
}
/* Read-write delegates */
/**
* A property delegate that uses custom key
*/
fun MutableItemProvider.value(key: Name? = null): ReadWriteProperty<Any?, Value?> =
public fun MutableItemProvider.value(key: Name? = null): ReadWriteProperty<Any?, Value?> =
item(key).convert(MetaConverter.value)
fun MutableItemProvider.string(key: Name? = null): ReadWriteProperty<Any?, String?> =
public fun MutableItemProvider.string(key: Name? = null): ReadWriteProperty<Any?, String?> =
item(key).convert(MetaConverter.string)
fun MutableItemProvider.boolean(key: Name? = null): ReadWriteProperty<Any?, Boolean?> =
public fun MutableItemProvider.boolean(key: Name? = null): ReadWriteProperty<Any?, Boolean?> =
item(key).convert(MetaConverter.boolean)
fun MutableItemProvider.number(key: Name? = null): ReadWriteProperty<Any?, Number?> =
public fun MutableItemProvider.number(key: Name? = null): ReadWriteProperty<Any?, Number?> =
item(key).convert(MetaConverter.number)
fun MutableItemProvider.string(default: String, key: Name? = null): ReadWriteProperty<Any?, String> =
public fun MutableItemProvider.string(default: String, key: Name? = null): ReadWriteProperty<Any?, String> =
item(key).convert(MetaConverter.string) { default }
fun MutableItemProvider.boolean(default: Boolean, key: Name? = null): ReadWriteProperty<Any?, Boolean> =
public fun MutableItemProvider.boolean(default: Boolean, key: Name? = null): ReadWriteProperty<Any?, Boolean> =
item(key).convert(MetaConverter.boolean) { default }
fun MutableItemProvider.number(default: Number, key: Name? = null): ReadWriteProperty<Any?, Number> =
public fun MutableItemProvider.number(default: Number, key: Name? = null): ReadWriteProperty<Any?, Number> =
item(key).convert(MetaConverter.number) { default }
fun MutableItemProvider.value(key: Name? = null, default: () -> Value): ReadWriteProperty<Any?, Value> =
public fun MutableItemProvider.value(key: Name? = null, default: () -> Value): ReadWriteProperty<Any?, Value> =
item(key).convert(MetaConverter.value, default)
fun MutableItemProvider.string(key: Name? = null, default: () -> String): ReadWriteProperty<Any?, String> =
public fun MutableItemProvider.string(key: Name? = null, default: () -> String): ReadWriteProperty<Any?, String> =
item(key).convert(MetaConverter.string, default)
fun MutableItemProvider.boolean(key: Name? = null, default: () -> Boolean): ReadWriteProperty<Any?, Boolean> =
public fun MutableItemProvider.boolean(key: Name? = null, default: () -> Boolean): ReadWriteProperty<Any?, Boolean> =
item(key).convert(MetaConverter.boolean, default)
fun MutableItemProvider.number(key: Name? = null, default: () -> Number): ReadWriteProperty<Any?, Number> =
public fun MutableItemProvider.number(key: Name? = null, default: () -> Number): ReadWriteProperty<Any?, Number> =
item(key).convert(MetaConverter.number, default)
inline fun <reified E : Enum<E>> MutableItemProvider.enum(default: E, key: Name? = null): ReadWriteProperty<Any?, E> =
public inline fun <reified E : Enum<E>> MutableItemProvider.enum(default: E, key: Name? = null): ReadWriteProperty<Any?, E> =
item(key).convert(MetaConverter.enum()) { default }
inline fun <reified M : MutableMeta<M>> M.node(key: Name? = null): ReadWriteProperty<Any?, M?> =
public inline fun <reified M : MutableMeta<M>> M.node(key: Name? = null): ReadWriteProperty<Any?, M?> =
item(key).convert(reader = { it?.let { it.node as M } }, writer = { it?.let { MetaItem.NodeItem(it) } })
fun Configurable.value(key: Name? = null): ReadWriteProperty<Any?, Value?> =
public fun Configurable.value(key: Name? = null): ReadWriteProperty<Any?, Value?> =
item(key).convert(MetaConverter.value)
/* Number delegates */
fun MutableItemProvider.int(key: Name? = null): ReadWriteProperty<Any?, Int?> =
public fun MutableItemProvider.int(key: Name? = null): ReadWriteProperty<Any?, Int?> =
item(key).convert(MetaConverter.int)
fun MutableItemProvider.double(key: Name? = null): ReadWriteProperty<Any?, Double?> =
public fun MutableItemProvider.double(key: Name? = null): ReadWriteProperty<Any?, Double?> =
item(key).convert(MetaConverter.double)
fun MutableItemProvider.long(key: Name? = null): ReadWriteProperty<Any?, Long?> =
public fun MutableItemProvider.long(key: Name? = null): ReadWriteProperty<Any?, Long?> =
item(key).convert(MetaConverter.long)
fun MutableItemProvider.float(key: Name? = null): ReadWriteProperty<Any?, Float?> =
public fun MutableItemProvider.float(key: Name? = null): ReadWriteProperty<Any?, Float?> =
item(key).convert(MetaConverter.float)
/* Safe number delegates*/
fun MutableItemProvider.int(default: Int, key: Name? = null): ReadWriteProperty<Any?, Int> =
public fun MutableItemProvider.int(default: Int, key: Name? = null): ReadWriteProperty<Any?, Int> =
item(key).convert(MetaConverter.int) { default }
fun MutableItemProvider.double(default: Double, key: Name? = null): ReadWriteProperty<Any?, Double> =
public fun MutableItemProvider.double(default: Double, key: Name? = null): ReadWriteProperty<Any?, Double> =
item(key).convert(MetaConverter.double) { default }
fun MutableItemProvider.long(default: Long, key: Name? = null): ReadWriteProperty<Any?, Long> =
public fun MutableItemProvider.long(default: Long, key: Name? = null): ReadWriteProperty<Any?, Long> =
item(key).convert(MetaConverter.long) { default }
fun MutableItemProvider.float(default: Float, key: Name? = null): ReadWriteProperty<Any?, Float> =
public fun MutableItemProvider.float(default: Float, key: Name? = null): ReadWriteProperty<Any?, Float> =
item(key).convert(MetaConverter.float) { default }
/*
* Extra delegates for special cases
*/
fun MutableItemProvider.stringList(
/* Extra delegates for special cases */
public fun MutableItemProvider.stringList(
vararg default: String,
key: Name? = null
): ReadWriteProperty<Any?, List<String>> = item(key).convert(
@ -116,14 +161,14 @@ fun MutableItemProvider.stringList(
writer = { it.map { str -> str.asValue() }.asValue().asMetaItem() }
)
fun MutableItemProvider.stringList(
public fun MutableItemProvider.stringList(
key: Name? = null
): ReadWriteProperty<Any?, List<String>?> = item(key).convert(
reader = { it?.stringList },
writer = { it?.map { str -> str.asValue() }?.asValue()?.asMetaItem() }
)
fun MutableItemProvider.numberList(
public fun MutableItemProvider.numberList(
vararg default: Number,
key: Name? = null
): ReadWriteProperty<Any?, List<Number>> = item(key).convert(
@ -131,10 +176,10 @@ fun MutableItemProvider.numberList(
writer = { it.map { num -> num.asValue() }.asValue().asMetaItem() }
)
/**
* A special delegate for double arrays
*/
fun MutableItemProvider.doubleArray(
/* A special delegate for double arrays */
public fun MutableItemProvider.doubleArray(
vararg default: Double,
key: Name? = null
): ReadWriteProperty<Any?, DoubleArray> =item(key).convert(
@ -142,7 +187,7 @@ fun MutableItemProvider.doubleArray(
writer = { DoubleArrayValue(it).asMetaItem() }
)
fun <T> MutableItemProvider.listValue(
public fun <T> MutableItemProvider.listValue(
key: Name? = null,
writer: (T) -> Value = { Value.of(it) },
reader: (Value) -> T

83
dataforge-meta/src/commonMain/kotlin/hep/dataforge/meta/propertyConverter.kt
View File

@ -1,83 +0,0 @@
package hep.dataforge.meta
import hep.dataforge.meta.transformations.MetaConverter
import kotlin.properties.ReadOnlyProperty
import kotlin.properties.ReadWriteProperty
import kotlin.reflect.KProperty
/**
* Apply a converter to this delegate creating a delegate with a custom type
*/
fun <R : Any> ItemDelegate.convert(
converter: MetaConverter<R>
): ReadOnlyProperty<Any?, R?> = object : ReadOnlyProperty<Any?, R?> {
override fun getValue(thisRef: Any?, property: KProperty<*>): R? =
this@convert.getValue(thisRef, property)?.let(converter::itemToObject)
}
/*
*
*/
fun <R : Any> ItemDelegate.convert(
converter: MetaConverter<R>,
default: () -> R
): ReadOnlyProperty<Any?, R> = object : ReadOnlyProperty<Any?, R> {
override fun getValue(thisRef: Any?, property: KProperty<*>): R =
this@convert.getValue(thisRef, property)?.let(converter::itemToObject) ?: default()
}
/**
* A converter with a custom reader transformation
*/
fun <R> ItemDelegate.convert(
reader: (MetaItem<*>?) -> R
): ReadOnlyProperty<Any?, R> = object : ReadOnlyProperty<Any?, R> {
override fun getValue(thisRef: Any?, property: KProperty<*>): R =
this@convert.getValue(thisRef, property).let(reader)
}
/*Mutable converters*/
/**
* A type converter for a mutable [MetaItem] delegate
*/
fun <R : Any> MutableItemDelegate.convert(
converter: MetaConverter<R>
): ReadWriteProperty<Any?, R?> = object : ReadWriteProperty<Any?, R?> {
override fun getValue(thisRef: Any?, property: KProperty<*>): R? =
this@convert.getValue(thisRef, property)?.let(converter::itemToObject)
override fun setValue(thisRef: Any?, property: KProperty<*>, value: R?) {
val item = value?.let(converter::objectToMetaItem)
this@convert.setValue(thisRef, property, item)
}
}
fun <R : Any> MutableItemDelegate.convert(
converter: MetaConverter<R>,
default: () -> R
): ReadWriteProperty<Any?, R> = object : ReadWriteProperty<Any?, R> {
override fun getValue(thisRef: Any?, property: KProperty<*>): R =
this@convert.getValue(thisRef, property)?.let(converter::itemToObject) ?: default()
override fun setValue(thisRef: Any?, property: KProperty<*>, value: R) {
val item = value.let(converter::objectToMetaItem)
this@convert.setValue(thisRef, property, item)
}
}
fun <R> MutableItemDelegate.convert(
reader: (MetaItem<*>?) -> R,
writer: (R) -> MetaItem<*>?
): ReadWriteProperty<Any?, R> = object : ReadWriteProperty<Any?, R> {
override fun getValue(thisRef: Any?, property: KProperty<*>): R =
this@convert.getValue(thisRef, property).let(reader)
override fun setValue(thisRef: Any?, property: KProperty<*>, value: R) {
val item = value?.let(writer)
this@convert.setValue(thisRef, property, item)
}
}

1
settings.gradle.kts
View File

@ -18,7 +18,6 @@ pluginManagement {
id("ru.mipt.npm.publish") version toolsVersion
kotlin("jvm") version kotlinVersion
kotlin("js") version kotlinVersion
}
}