Do not find javadoc for non-JVM source set (#3346)

* Add test

* Do not find javadoc for non-JVM source set

* [K2] Add javadoc parser for external documentable Provider

4 files changed, 83 insertions, 17 deletions

diff --git a/dokka-subprojects/analysis-kotlin-descriptors-compiler/src/main/kotlin/org/jetbrains/dokka/analysis/kotlin/descriptors/compiler/translator/DefaultDescriptorToDocumentableTranslator.kt b/dokka-subprojects/analysis-kotlin-descriptors-compiler/src/main/kotlin/org/jetbrains/dokka/analysis/kotlin/descriptors/compiler/translator/DefaultDescriptorToDocumentableTranslator.kt
index 4d561189..04b2cb20 100644
--- a/dokka-subprojects/analysis-kotlin-descriptors-compiler/src/main/kotlin/org/jetbrains/dokka/analysis/kotlin/descriptors/compiler/translator/DefaultDescriptorToDocumentableTranslator.kt
+++ b/dokka-subprojects/analysis-kotlin-descriptors-compiler/src/main/kotlin/org/jetbrains/dokka/analysis/kotlin/descriptors/compiler/translator/DefaultDescriptorToDocumentableTranslator.kt
@@ -9,6 +9,7 @@ import com.intellij.psi.PsiNamedElement
 import com.intellij.psi.util.PsiLiteralUtil.*
 import kotlinx.coroutines.*
 import org.jetbrains.dokka.DokkaConfiguration.DokkaSourceSet
+import org.jetbrains.dokka.Platform
 import org.jetbrains.dokka.analysis.java.JavaAnalysisPlugin
 import org.jetbrains.dokka.analysis.java.parsers.JavadocParser
 import org.jetbrains.dokka.analysis.kotlin.descriptors.compiler.CompilerDescriptorAnalysisPlugin
@@ -98,11 +99,13 @@ internal class DefaultDescriptorToDocumentableTranslator(
             .mapNotNull { analysisContext.resolveSession.getPackageFragment(it) }
             .toList()
 
-        val javadocParser = JavadocParser(
-            docCommentParsers = context.plugin<JavaAnalysisPlugin>().query { docCommentParsers },
-            docCommentFinder = context.plugin<JavaAnalysisPlugin>().docCommentFinder
-        )
-
+        val javadocParser =
+            if (sourceSet.analysisPlatform == Platform.jvm)
+                JavadocParser(
+                    docCommentParsers = context.plugin<JavaAnalysisPlugin>().query { docCommentParsers },
+                    docCommentFinder = context.plugin<JavaAnalysisPlugin>().docCommentFinder
+                )
+            else null
 
         return DokkaDescriptorVisitor(sourceSet, kdocFinder, kotlinAnalysis[sourceSet], context.logger, javadocParser).run {
             packageFragments.parallelMap {
@@ -128,10 +131,13 @@ internal class DefaultDescriptorToDocumentableTranslator(
     override fun translateClassDescriptor(descriptor: ClassDescriptor, sourceSet: DokkaSourceSet): DClasslike {
         val driInfo = DRI.from(descriptor.parents.first()).withEmptyInfo()
 
-        val javadocParser = JavadocParser(
-            docCommentParsers = context.plugin<JavaAnalysisPlugin>().query { docCommentParsers },
-            docCommentFinder = context.plugin<JavaAnalysisPlugin>().docCommentFinder
-        )
+        val javadocParser =
+            if (sourceSet.analysisPlatform == Platform.jvm)
+                JavadocParser(
+                    docCommentParsers = context.plugin<JavaAnalysisPlugin>().query { docCommentParsers },
+                    docCommentFinder = context.plugin<JavaAnalysisPlugin>().docCommentFinder
+                )
+            else null
 
         return newSingleThreadContext("Generating documentable model of classlike").use { coroutineContext -> // see https://github.com/Kotlin/dokka/issues/3151
             runBlocking(coroutineContext) {
@@ -149,12 +155,15 @@ internal data class DRIWithPlatformInfo(
 
 internal fun DRI.withEmptyInfo() = DRIWithPlatformInfo(this, emptyMap())
 
+/**
+ * @param javadocParser can be null for non JVM platform
+ */
 private class DokkaDescriptorVisitor(
     private val sourceSet: DokkaSourceSet,
     private val kDocFinder: KDocFinder,
     private val analysisContext: AnalysisContext,
     private val logger: DokkaLogger,
-    private val javadocParser: JavadocParser
+    private val javadocParser: JavadocParser? = null
 ) {
     private val syntheticDocProvider = SyntheticDescriptorDocumentationProvider(kDocFinder, sourceSet)
 
@@ -1080,16 +1089,16 @@ private class DokkaDescriptorVisitor(
                         else it
                     }
                 )
-            } ?: getJavaDocs())?.takeIf { it.children.isNotEmpty() }
+            } ?: javadocParser?.getJavaDocs(this))?.takeIf { it.children.isNotEmpty() }
         }
 
-    private fun DeclarationDescriptor.getJavaDocs(): DocumentationNode? {
-        val overriddenDescriptors = (this as? CallableDescriptor)?.overriddenDescriptors ?: emptyList()
-        val allDescriptors = overriddenDescriptors + listOf(this)
+    private fun JavadocParser.getJavaDocs(declarationDescriptor: DeclarationDescriptor): DocumentationNode? {
+        val overriddenDescriptors = (declarationDescriptor as? CallableDescriptor)?.overriddenDescriptors ?: emptyList()
+        val allDescriptors = overriddenDescriptors + listOf(declarationDescriptor)
         return allDescriptors
             .mapNotNull { it.findPsi() as? PsiNamedElement }
             .firstOrNull()
-            ?.let { javadocParser.parseDocumentation(it) }
+            ?.let { parseDocumentation(it) }
     }
 
     private suspend fun ClassDescriptor.companion(dri: DRIWithPlatformInfo): DObject? = companionObjectDescriptor?.let {
diff --git a/dokka-subprojects/analysis-kotlin-symbols/src/main/kotlin/org/jetbrains/dokka/analysis/kotlin/symbols/services/SymbolExternalDocumentablesProvider.kt b/dokka-subprojects/analysis-kotlin-symbols/src/main/kotlin/org/jetbrains/dokka/analysis/kotlin/symbols/services/SymbolExternalDocumentablesProvider.kt
index 1473a7da..f68de715 100644
--- a/dokka-subprojects/analysis-kotlin-symbols/src/main/kotlin/org/jetbrains/dokka/analysis/kotlin/symbols/services/SymbolExternalDocumentablesProvider.kt
+++ b/dokka-subprojects/analysis-kotlin-symbols/src/main/kotlin/org/jetbrains/dokka/analysis/kotlin/symbols/services/SymbolExternalDocumentablesProvider.kt
@@ -5,6 +5,9 @@
 package org.jetbrains.dokka.analysis.kotlin.symbols.services
 
 import org.jetbrains.dokka.DokkaConfiguration.DokkaSourceSet
+import org.jetbrains.dokka.Platform
+import org.jetbrains.dokka.analysis.java.JavaAnalysisPlugin
+import org.jetbrains.dokka.analysis.java.parsers.JavadocParser
 import org.jetbrains.dokka.analysis.kotlin.symbols.plugin.SymbolsAnalysisPlugin
 import org.jetbrains.dokka.analysis.kotlin.symbols.translators.DokkaSymbolVisitor
 import org.jetbrains.dokka.analysis.kotlin.symbols.translators.getClassIdFromDRI
@@ -17,6 +20,7 @@ import org.jetbrains.dokka.plugability.querySingle
 import org.jetbrains.kotlin.analysis.api.analyze
 import org.jetbrains.kotlin.analysis.api.symbols.KtNamedClassOrObjectSymbol
 import org.jetbrains.dokka.analysis.kotlin.internal.ExternalDocumentablesProvider
+import org.jetbrains.dokka.plugability.query
 
 internal class SymbolExternalDocumentablesProvider(val context: DokkaContext) : ExternalDocumentablesProvider {
     private val kotlinAnalysis = context.plugin<SymbolsAnalysisPlugin>().querySingle { kotlinAnalysis }
@@ -26,7 +30,14 @@ internal class SymbolExternalDocumentablesProvider(val context: DokkaContext) :
 
         return analyze(kotlinAnalysis.getModule(sourceSet)) {
             val symbol = getClassOrObjectSymbolByClassId(classId) as? KtNamedClassOrObjectSymbol?: return@analyze null
-            val translator = DokkaSymbolVisitor(sourceSet, sourceSet.displayName, kotlinAnalysis, logger = context.logger)
+            val javadocParser =
+                if (sourceSet.analysisPlatform == Platform.jvm)
+                    JavadocParser(
+                        docCommentParsers = context.plugin<JavaAnalysisPlugin>().query { docCommentParsers },
+                        docCommentFinder = context.plugin<JavaAnalysisPlugin>().docCommentFinder
+                    )
+                else null
+            val translator = DokkaSymbolVisitor(sourceSet, sourceSet.displayName, kotlinAnalysis, logger = context.logger, javadocParser)
 
             val parentDRI = symbol.getContainingSymbol()?.let { getDRIFromSymbol(it) } ?: /* top level */ DRI(dri.packageName)
             with(translator) {
diff --git a/dokka-subprojects/analysis-kotlin-symbols/src/main/kotlin/org/jetbrains/dokka/analysis/kotlin/symbols/translators/DefaultSymbolToDocumentableTranslator.kt b/dokka-subprojects/analysis-kotlin-symbols/src/main/kotlin/org/jetbrains/dokka/analysis/kotlin/symbols/translators/DefaultSymbolToDocumentableTranslator.kt
index 298d0182..9a17f831 100644
--- a/dokka-subprojects/analysis-kotlin-symbols/src/main/kotlin/org/jetbrains/dokka/analysis/kotlin/symbols/translators/DefaultSymbolToDocumentableTranslator.kt
+++ b/dokka-subprojects/analysis-kotlin-symbols/src/main/kotlin/org/jetbrains/dokka/analysis/kotlin/symbols/translators/DefaultSymbolToDocumentableTranslator.kt
@@ -8,6 +8,7 @@ package org.jetbrains.dokka.analysis.kotlin.symbols.translators
 import org.jetbrains.dokka.analysis.kotlin.symbols.plugin.*
 import com.intellij.psi.util.PsiLiteralUtil
 import org.jetbrains.dokka.DokkaConfiguration
+import org.jetbrains.dokka.Platform
 import org.jetbrains.dokka.analysis.java.JavaAnalysisPlugin
 import org.jetbrains.dokka.analysis.java.parsers.JavadocParser
 import org.jetbrains.dokka.analysis.kotlin.symbols.kdoc.getGeneratedKDocDocumentationFrom
@@ -65,7 +66,7 @@ internal class DefaultSymbolToDocumentableTranslator(context: DokkaContext) : As
             moduleName = context.configuration.moduleName,
             analysisContext = analysisContext,
             logger = context.logger,
-            javadocParser = javadocParser
+            javadocParser = if(sourceSet.analysisPlatform == Platform.jvm) javadocParser else null
         ).visitModule()
     }
 }
@@ -79,6 +80,8 @@ internal fun <T : Bound> T.wrapWithVariance(variance: org.jetbrains.kotlin.types
 
 /**
  * Maps [KtSymbol] to Documentable model [Documentable]
+ *
+ * @param javadocParser can be null for non JVM platform
  */
 internal class DokkaSymbolVisitor(
     private val sourceSet: DokkaConfiguration.DokkaSourceSet,
diff --git a/dokka-subprojects/plugin-base/src/test/kotlin/model/MultiLanguageInheritanceTest.kt b/dokka-subprojects/plugin-base/src/test/kotlin/model/MultiLanguageInheritanceTest.kt
index 9b646f24..c8a18788 100644
--- a/dokka-subprojects/plugin-base/src/test/kotlin/model/MultiLanguageInheritanceTest.kt
+++ b/dokka-subprojects/plugin-base/src/test/kotlin/model/MultiLanguageInheritanceTest.kt
@@ -4,6 +4,7 @@
 
 package model
 
+import org.jetbrains.dokka.Platform
 import org.jetbrains.dokka.base.testApi.testRunner.BaseAbstractTest
 import org.jetbrains.dokka.links.DRI
 import org.jetbrains.dokka.links.PointingToDeclaration
@@ -27,6 +28,48 @@ class MultiLanguageInheritanceTest : BaseAbstractTest() {
     }
 
     @Test
+    fun `should not try to find javadoc for non JVM source set`() {
+        // Bug #3209 is actual for Dokka K1
+        // Technical note: `KtPropertyAccessor`, i.e. `<get-withHintType>`,  is not KtCallableDeclaration so `findKDoc` returns null
+        // Meanwhile, `getJavaDocs()` for KtPropertyAccessor tries to unexpectedly parse the KDoc documentation of property, i.e. `withHintType`
+
+        val nonJvmConfiguration = dokkaConfiguration {
+            suppressObviousFunctions = false
+            sourceSets {
+                sourceSet {
+                    analysisPlatform = Platform.common.key
+                    sourceRoots = listOf("src/main/kotlin")
+                }
+            }
+        }
+
+        testInline(
+            """
+            |/src/main/kotlin/sample/Parent.kt
+            |package sample
+            |
+            |/**
+            | * Sample description from parent
+            | */
+            |interface Parent {
+            |    /**
+            |    * Sample description from parent
+            |    */  
+            |    val withHintType: String
+            |}
+            |
+            |/src/main/kotlin/sample/Child.kt
+            |package sample
+            |public class Child : Parent {
+            |   override val withHintType: String 
+            |    get() = ""
+            |}
+            """.trimIndent(),
+            nonJvmConfiguration
+        ) { }
+    }
+
+    @Test
     fun `from java to kotlin`() {
         testInline(
             """