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package org.jetbrains.dokka.renderers
import org.jetbrains.dokka.CoreExtensions
import org.jetbrains.dokka.pages.*
import org.jetbrains.dokka.plugability.DokkaContext
import org.jetbrains.dokka.plugability.single
import org.jetbrains.dokka.resolvers.LocationProvider
import org.jetbrains.dokka.transformers.pages.PageNodeTransformer
abstract class DefaultRenderer<T>(
protected val outputWriter: OutputWriter,
protected val context: DokkaContext
) : Renderer {
private val extension = context.single(CoreExtensions.fileExtension)
protected lateinit var locationProvider: LocationProvider
private set
protected open val preprocessors: Iterable<PageNodeTransformer> = emptyList()
protected abstract fun T.buildHeader(level: Int, content: T.() -> Unit)
protected abstract fun T.buildLink(address: String, content: T.() -> Unit)
protected abstract fun T.buildList(node: ContentList, pageContext: ContentPage)
protected abstract fun T.buildNewLine()
protected abstract fun T.buildResource(node: ContentEmbeddedResource, pageContext: ContentPage)
protected abstract fun T.buildTable(node: ContentTable, pageContext: ContentPage)
protected abstract fun T.buildText(textNode: ContentText)
protected abstract fun T.buildNavigation(page: PageNode)
protected abstract fun buildPage(page: ContentPage, content: (T, ContentPage) -> Unit): String
protected abstract fun buildError(node: ContentNode)
protected open fun T.buildGroup(node: ContentGroup, pageContext: ContentPage) {
node.children.forEach { it.build(this, pageContext) }
}
protected open fun T.buildLinkText(nodes: List<ContentNode>, pageContext: ContentPage) {
nodes.forEach { it.build(this, pageContext) }
}
protected open fun T.buildCode(code: List<ContentNode>, language: String, pageContext: ContentPage) {
code.forEach { it.build(this, pageContext) }
}
protected open fun T.buildHeader(node: ContentHeader, pageContext: ContentPage) {
buildHeader(node.level) { node.children.forEach { it.build(this, pageContext) } }
}
protected open fun ContentNode.build(builder: T, pageContext: ContentPage) =
builder.buildContentNode(this, pageContext)
protected open fun T.buildContentNode(node: ContentNode, pageContext: ContentPage) {
when (node) {
is ContentText -> buildText(node)
is ContentHeader -> buildHeader(node, pageContext)
is ContentCode -> buildCode(node.children, node.language, pageContext)
is ContentDRILink -> buildLink(
locationProvider.resolve(node.address, node.platforms.toList(), pageContext)
) {
buildLinkText(node.children, pageContext)
}
is ContentResolvedLink -> buildLink(node.address) { buildLinkText(node.children, pageContext) }
is ContentEmbeddedResource -> buildResource(node, pageContext)
is ContentList -> buildList(node, pageContext)
is ContentTable -> buildTable(node, pageContext)
is ContentGroup -> buildGroup(node, pageContext)
else -> buildError(node)
}
}
protected open fun buildPageContent(context: T, page: ContentPage) {
context.buildNavigation(page)
page.content.build(context, page)
}
protected open fun renderPage(page: PageNode) {
val path by lazy { locationProvider.resolve(page, skipExtension = true) }
when (page) {
is ContentPage -> outputWriter.write(path, buildPage(page) { c, p -> buildPageContent(c, p) }, extension)
is RendererSpecificPage -> when (val strategy = page.strategy) {
is RenderingStrategy.Copy -> outputWriter.writeResources(strategy.from, path)
is RenderingStrategy.Write -> outputWriter.write(path, strategy.text, "")
is RenderingStrategy.Callback -> outputWriter.write(path, strategy.instructions(this, page))
RenderingStrategy.DoNothing -> Unit
}
else -> throw AssertionError(
"Page ${page.name} cannot be rendered by renderer as it is not renderer specific nor contains content"
)
}
}
protected open fun renderPages(root: PageNode) {
renderPage(root)
root.children.forEach { renderPages(it) }
}
// reimplement this as preprocessor
protected open fun renderPackageList(root: ContentPage) =
getPackageNamesAndPlatforms(root)
.keys
.joinToString("\n")
.also { outputWriter.write("${root.name}/package-list", it, "") }
protected open fun getPackageNamesAndPlatforms(root: PageNode): Map<String, List<PlatformData>> =
root.children
.map(::getPackageNamesAndPlatforms)
.fold(emptyMap<String, List<PlatformData>>()) { e, acc -> acc + e } +
if (root is PackagePageNode) {
mapOf(root.name to root.platforms())
} else {
emptyMap()
}
override fun render(root: RootPageNode) {
val newRoot = preprocessors.fold(root) { acc, t -> t(acc) }
locationProvider =
context.single(CoreExtensions.locationProviderFactory).getLocationProvider(newRoot)
root.children<ModulePageNode>().forEach { renderPackageList(it) }
renderPages(newRoot)
}
}
fun ContentPage.platforms() = this.content.platforms.toList()
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