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package org.jetbrains.dokka.plugability
data class ExtensionPoint<T : Any> internal constructor(
internal val pluginClass: String,
internal val pointName: String
) {
override fun toString() = "ExtensionPoint: $pluginClass/$pointName"
}
abstract class Extension<T : Any> internal constructor(
internal val extensionPoint: ExtensionPoint<T>,
internal val pluginClass: String,
internal val extensionName: String,
val action: T,
internal val ordering: (OrderDsl.() -> Unit)? = null
) {
override fun toString() = "Extension: $pluginClass/$extensionName"
override fun equals(other: Any?) =
if (other is Extension<*>) this.pluginClass == other.pluginClass && this.extensionName == other.extensionName
else false
override fun hashCode() = listOf(pluginClass, extensionName).hashCode()
}
class ExtensionOrdered<T : Any>(
extensionPoint: ExtensionPoint<T>,
pluginClass: String,
extensionName: String,
action: T,
ordering: (OrderDsl.() -> Unit)
) : Extension<T>(
extensionPoint,
pluginClass,
extensionName,
action,
ordering
)
class ExtensionUnordered<T : Any>(
extensionPoint: ExtensionPoint<T>,
pluginClass: String,
extensionName: String,
action: T
) : Extension<T>(
extensionPoint,
pluginClass,
extensionName,
action,
null
)
internal data class Ordering(val previous: Set<Extension<*>>, val following: Set<Extension<*>>)
@DslMarker
annotation class ExtensionsDsl
@ExtensionsDsl
class ExtendingDSL(private val pluginClass: String, private val extensionName: String) {
infix fun <T: Any> ExtensionPoint<T>.with(action: T) =
ExtensionUnordered(this, this@ExtendingDSL.pluginClass, extensionName, action)
infix fun <T: Any> ExtensionUnordered<T>.order(block: OrderDsl.() -> Unit) =
ExtensionOrdered(extensionPoint, pluginClass, extensionName, action, block)
}
@ExtensionsDsl
class OrderDsl {
internal val previous = mutableSetOf<Extension<*>>()
internal val following = mutableSetOf<Extension<*>>()
fun after(vararg extensions: Extension<*>) {
previous += extensions
}
fun before(vararg extensions: Extension<*>) {
following += extensions
}
}
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