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Basic design for external connectors

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This commit is contained in:
Alexander Nozik 2020-03-02 19:17:36 +03:00
parent a2e8d4f018
commit 93c806c3bf
4 changed files with 17 additions and 4 deletions
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2
dataforge-context/src/commonMain/kotlin/hep/dataforge/context/PluginManager.kt
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@ -62,7 +62,7 @@ class PluginManager(override val context: Context) : ContextAware, Iterable<Plug
* @return
*/
@Suppress("UNCHECKED_CAST")
operator fun <T : Any> get(type: KClass<T>, tag: PluginTag? = null, recursive: Boolean = true): T? =
operator fun <T : Any> get(type: KClass<out T>, tag: PluginTag? = null, recursive: Boolean = true): T? =
find(recursive) { type.isInstance(it) && (tag == null || tag.matches(it.tag)) } as T?
inline operator fun <reified T : Any> get(tag: PluginTag? = null, recursive: Boolean = true): T? =

4
dataforge-meta/src/commonMain/kotlin/hep/dataforge/meta/MetaBuilder.kt
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@ -15,6 +15,10 @@ class MetaBuilder : AbstractMutableMeta<MetaBuilder>() {
override fun wrapNode(meta: Meta): MetaBuilder = if (meta is MetaBuilder) meta else meta.builder()
override fun empty(): MetaBuilder = MetaBuilder()
infix fun String.put(item: MetaItem<*>?) {
set(this, item)
}
infix fun String.put(value: Value?) {
set(this, value)
}

12
dataforge-meta/src/commonMain/kotlin/hep/dataforge/meta/MutableMetaDelegate.kt
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@ -49,9 +49,19 @@ fun <T, R> ReadWriteProperty<Any?, T>.map(reader: (T) -> R, writer: (R) -> T): R
fun <R> ReadWriteProperty<Any?, MetaItem<*>?>.transform(reader: (MetaItem<*>?) -> R): ReadWriteProperty<Any?, R> =
map(reader = reader, writer = { MetaItem.of(it) })
fun <R> ReadWriteProperty<Any?, Value?>.transform(reader: (Value?) -> R) =
fun <R> ReadWriteProperty<Any?, Value?>.transform(reader: (Value?) -> R): ReadWriteDelegateWrapper<Value?, R> =
map(reader = reader, writer = { Value.of(it) })
/**
* A delegate that throws
*/
fun <R : Any> ReadWriteProperty<Any?, R?>.notNull(default: () -> R): ReadWriteProperty<Any?, R> {
return ReadWriteDelegateWrapper(this,
reader = { it ?: default() },
writer = { it }
)
}
fun <M : MutableMeta<M>> M.item(default: Any? = null, key: Name? = null): MutableMetaDelegate<M> =
MutableMetaDelegate(this, key, default?.let { MetaItem.of(it) })

3
dataforge-meta/src/commonMain/kotlin/hep/dataforge/meta/scheme/Scheme.kt
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@ -59,8 +59,7 @@ open class Scheme() : Configurable, Described, MetaRepr {
/**
* A specification for simplified generation of wrappers
*/
open class SchemeSpec<T : Scheme>(val builder: () -> T) :
Specification<T> {
open class SchemeSpec<T : Scheme>(val builder: () -> T) : Specification<T> {
override fun wrap(config: Config, defaultProvider: (Name) -> MetaItem<*>?): T {
return builder().apply {
this.config = config