2 files changed, 88 insertions, 0 deletions

diff --git a/core/src/main/kotlin/Formats/JavaLayoutHtml/JavaLayoutHtmlPackageListService.kt b/core/src/main/kotlin/Formats/JavaLayoutHtml/JavaLayoutHtmlPackageListService.kt
index 398758f2..d04ed64b 100644
--- a/core/src/main/kotlin/Formats/JavaLayoutHtml/JavaLayoutHtmlPackageListService.kt
+++ b/core/src/main/kotlin/Formats/JavaLayoutHtml/JavaLayoutHtmlPackageListService.kt
@@ -2,8 +2,13 @@ package org.jetbrains.dokka.Formats
 
 import org.jetbrains.dokka.DocumentationModule
 import org.jetbrains.dokka.ExternalDocumentationLinkResolver.Companion.DOKKA_PARAM_PREFIX
+import org.jetbrains.dokka.InboundExternalLinkResolutionService
 import org.jetbrains.dokka.NodeKind
 import org.jetbrains.dokka.PackageListService
+import org.jetbrains.kotlin.descriptors.*
+import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameUnsafe
+import org.jetbrains.kotlin.resolve.descriptorUtil.isCompanionObject
+import org.jetbrains.kotlin.types.KotlinType
 
 class JavaLayoutHtmlPackageListService: PackageListService {
 
@@ -19,10 +24,91 @@ class JavaLayoutHtmlPackageListService: PackageListService {
 
         return buildString {
             appendParam("format", "java-layout-html")
+            appendParam("mode", "kotlin")
             for (p in packages) {
                 appendln(p)
             }
         }
     }
 
+}
+
+class JavaLayoutHtmlInboundLinkResolutionService(private val paramMap: Map<String, List<String>>) : InboundExternalLinkResolutionService {
+    private fun getContainerPath(symbol: DeclarationDescriptor): String? {
+        return when (symbol) {
+            is PackageFragmentDescriptor -> symbol.fqName.asString() + "/"
+            is ClassifierDescriptor -> getContainerPath(symbol.findPackage()) + symbol.nameWithOuter() + ".html"
+            else -> null
+        }
+    }
+
+    private fun DeclarationDescriptor.findPackage(): PackageFragmentDescriptor =
+        generateSequence(this) { it.containingDeclaration }.filterIsInstance<PackageFragmentDescriptor>().first()
+
+    private fun ClassifierDescriptor.nameWithOuter(): String =
+        generateSequence(this) { it.containingDeclaration as? ClassifierDescriptor }
+            .toList().asReversed().joinToString(".") { it.name.asString() }
+
+    private fun getPagePath(symbol: DeclarationDescriptor): String? {
+        return when (symbol) {
+            is PackageFragmentDescriptor -> getContainerPath(symbol) + "package-summary.html"
+            is ClassifierDescriptor -> getContainerPath(symbol) + "#"
+            is FunctionDescriptor, is PropertyDescriptor -> getContainerPath(symbol.containingDeclaration!!) + "#" + symbol.signatureForAnchorUrlEncoded()
+            else -> null
+        }
+    }
+
+    private fun DeclarationDescriptor.signatureForAnchor(): String? {
+
+        fun ReceiverParameterDescriptor.extractReceiverName(): String {
+            var receiverClass: DeclarationDescriptor = type.constructor.declarationDescriptor!!
+            if (receiverClass.isCompanionObject()) {
+                receiverClass = receiverClass.containingDeclaration!!
+            } else if (receiverClass is TypeParameterDescriptor) {
+                val upperBoundClass = receiverClass.upperBounds.singleOrNull()?.constructor?.declarationDescriptor
+                if (upperBoundClass != null) {
+                    receiverClass = upperBoundClass
+                }
+            }
+
+            return receiverClass.name.asString()
+        }
+
+        fun KotlinType.qualifiedNameForSignature(): String {
+            val desc = constructor.declarationDescriptor
+            return desc?.fqNameUnsafe?.asString() ?: "<ERROR TYPE NAME>"
+        }
+
+        fun StringBuilder.appendReceiverAndCompanion(desc: CallableDescriptor) {
+            if (desc.containingDeclaration.isCompanionObject()) {
+                append("Companion.")
+            }
+            desc.extensionReceiverParameter?.let {
+                append("(")
+                append(it.extractReceiverName())
+                append(").")
+            }
+        }
+
+        return when(this) {
+            is FunctionDescriptor -> buildString {
+                appendReceiverAndCompanion(this@signatureForAnchor)
+                append(name.asString())
+                valueParameters.joinTo(this, prefix = "(", postfix = ")") {
+                    it.type.qualifiedNameForSignature()
+                }
+            }
+            is PropertyDescriptor -> buildString {
+                appendReceiverAndCompanion(this@signatureForAnchor)
+                append(name.asString())
+                append(":")
+                append(returnType?.qualifiedNameForSignature())
+            }
+            else -> null
+        }
+    }
+
+    private fun DeclarationDescriptor.signatureForAnchorUrlEncoded(): String? = signatureForAnchor()?.urlEncoded()
+
+    override fun getPath(symbol: DeclarationDescriptor) = getPagePath(symbol)
 }
\ No newline at end of file
diff --git a/core/src/main/resources/dokka/inbound-link-resolver/java-layout-html.properties b/core/src/main/resources/dokka/inbound-link-resolver/java-layout-html.properties
new file mode 100644
index 00000000..3b61eabe
--- /dev/null
+++ b/core/src/main/resources/dokka/inbound-link-resolver/java-layout-html.properties
@@ -0,0 +1,2 @@
+class=org.jetbrains.dokka.Formats.JavaLayoutHtmlInboundLinkResolutionService
+description=Resolver for JavaLayoutHtml
\ No newline at end of file