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package org.jetbrains.dokka
import com.google.inject.Inject
import org.jetbrains.kotlin.descriptors.CallableMemberDescriptor
import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
import org.jetbrains.kotlin.descriptors.TypeAliasDescriptor
import org.jetbrains.kotlin.idea.kdoc.resolveKDocLink
class DeclarationLinkResolver
@Inject constructor(val resolutionFacade: DokkaResolutionFacade,
val refGraph: NodeReferenceGraph,
val logger: DokkaLogger,
val options: DocumentationOptions,
val externalDocumentationLinkResolver: ExternalDocumentationLinkResolver,
val elementSignatureProvider: ElementSignatureProvider) {
fun tryResolveContentLink(fromDescriptor: DeclarationDescriptor, href: String): ContentBlock? {
val symbol = try {
val symbols = resolveKDocLink(resolutionFacade.resolveSession.bindingContext,
resolutionFacade, fromDescriptor, null, href.split('.').toList())
findTargetSymbol(symbols)
} catch(e: Exception) {
null
}
// don't include unresolved links in generated doc
// assume that if an href doesn't contain '/', it's not an attempt to reference an external file
if (symbol != null) {
val externalHref = externalDocumentationLinkResolver.buildExternalDocumentationLink(symbol)
if (externalHref != null) {
return ContentExternalLink(externalHref)
}
val signature = elementSignatureProvider.signature(symbol)
val referencedAt = fromDescriptor.signatureWithSourceLocation()
return ContentNodeLazyLink(href, { ->
val target = refGraph.lookup(signature)
if (target == null) {
logger.warn("Can't find node by signature `$signature`, referenced at $referencedAt")
}
target
})
}
if ("/" in href) {
return ContentExternalLink(href)
}
return null
}
fun resolveContentLink(fromDescriptor: DeclarationDescriptor, href: String) =
tryResolveContentLink(fromDescriptor, href) ?: run {
logger.warn("Unresolved link to $href in doc comment of ${fromDescriptor.signatureWithSourceLocation()}")
ContentExternalLink("#")
}
fun findTargetSymbol(symbols: Collection<DeclarationDescriptor>): DeclarationDescriptor? {
if (symbols.isEmpty()) {
return null
}
val symbol = symbols.first()
if (symbol is CallableMemberDescriptor && symbol.kind == CallableMemberDescriptor.Kind.FAKE_OVERRIDE) {
return symbol.overriddenDescriptors.firstOrNull()
}
if (symbol is TypeAliasDescriptor && !symbol.isDocumented(options)) {
return symbol.classDescriptor
}
return symbol
}
}
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