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package org.jetbrains.dokka.plugability
import org.jetbrains.dokka.DokkaConfiguration
data class ExtensionPoint<T : Any> internal constructor(
internal val pluginClass: String,
internal val pointName: String
) {
override fun toString() = "ExtensionPoint: $pluginClass/$pointName"
}
sealed class OrderingKind {
object None : OrderingKind()
class ByDsl(val block: (OrderDsl.() -> Unit)) : OrderingKind()
}
sealed class OverrideKind {
object None : OverrideKind()
class Present(val overriden: Extension<*, *, *>) : OverrideKind()
}
class Extension<T : Any, Ordering : OrderingKind, Override : OverrideKind> internal constructor(
internal val extensionPoint: ExtensionPoint<T>,
internal val pluginClass: String,
internal val extensionName: String,
internal val action: LazyEvaluated<T>,
internal val ordering: Ordering,
internal val override: Override,
internal val conditions: List<DokkaConfiguration.() -> Boolean>
) {
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()
val condition: DokkaConfiguration.() -> Boolean
get() = { conditions.all { it(this) } }
}
private fun <T : Any> Extension(
extensionPoint: ExtensionPoint<T>,
pluginClass: String,
extensionName: String,
action: LazyEvaluated<T>
) = Extension(extensionPoint, pluginClass, extensionName, action, OrderingKind.None, OverrideKind.None, emptyList())
@DslMarker
annotation class ExtensionsDsl
@ExtensionsDsl
class ExtendingDSL(private val pluginClass: String, private val extensionName: String) {
infix fun <T : Any> ExtensionPoint<T>.with(action: T) =
Extension(this, this@ExtendingDSL.pluginClass, extensionName, LazyEvaluated.fromInstance(action))
infix fun <T : Any> ExtensionPoint<T>.providing(action: (DokkaContext) -> T) =
Extension(this, this@ExtendingDSL.pluginClass, extensionName, LazyEvaluated.fromRecipe(action))
infix fun <T : Any, Override : OverrideKind> Extension<T, OrderingKind.None, Override>.order(
block: OrderDsl.() -> Unit
) = Extension(extensionPoint, pluginClass, extensionName, action, OrderingKind.ByDsl(block), override, conditions)
infix fun <T : Any, Override : OverrideKind, Ordering: OrderingKind> Extension<T, Ordering, Override>.applyIf(
condition: DokkaConfiguration.() -> Boolean
) = Extension(extensionPoint, pluginClass, extensionName, action, ordering, override, conditions + condition)
infix fun <T : Any, Override : OverrideKind, Ordering: OrderingKind> Extension<T, Ordering, Override>.override(
overriden: Extension<T, *, *>
) = Extension(extensionPoint, pluginClass, extensionName, action, ordering, OverrideKind.Present(overriden), conditions)
}
@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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