exclude top-level const val from getter generation and show them as public and static (#1636)

3 files changed, 77 insertions, 3 deletions

diff --git a/plugins/javadoc/src/test/kotlin/org/jetbrains/dokka/javadoc/JavadocClasslikeTemplateMapTest.kt b/plugins/javadoc/src/test/kotlin/org/jetbrains/dokka/javadoc/JavadocClasslikeTemplateMapTest.kt
index f03b10b4..2fb1ae0e 100644
--- a/plugins/javadoc/src/test/kotlin/org/jetbrains/dokka/javadoc/JavadocClasslikeTemplateMapTest.kt
+++ b/plugins/javadoc/src/test/kotlin/org/jetbrains/dokka/javadoc/JavadocClasslikeTemplateMapTest.kt
@@ -316,6 +316,33 @@ internal class JavadocClasslikeTemplateMapTest : AbstractJavadocTemplateMapTest(
         }
     }
 
+    @Test
+    fun `class with top-level const`() {
+        dualTestTemplateMapInline(
+            kotlin =
+                """
+                /src/Test.kt
+                package com.test.package0
+                
+                const val TEST_VAL = "test"
+                """,
+            java =
+                """
+                /src/com/test/package0/TestKt.java
+                package com.test.package0;
+                
+                public final class TestKt {
+                    public static final String TEST_VAL = "test"; 
+                }
+                """
+        ) {
+            val map = singlePageOfType<JavadocClasslikePageNode>().templateMap
+            val properties = assertIsInstance<List<*>>(map["properties"])
+            val property = assertIsInstance<Map<String, Any?>>(properties.first())
+            assertEquals("public final static <a href=https://docs.oracle.com/javase/8/docs/api/java/lang/String.html>String</a> <a href=TestKt.html#TEST_VAL>TEST_VAL</a>", "${property["modifiers"]} ${property["signature"]}")
+        }
+    }
+
     private fun assertParameterNode(node: Map<String, Any?>, expectedName: String, expectedType: String, expectedDescription: String){
         assertEquals(expectedName, node["name"])
         assertEquals(expectedType, node["type"])
diff --git a/plugins/kotlin-as-java/src/main/kotlin/converters/KotlinToJavaConverter.kt b/plugins/kotlin-as-java/src/main/kotlin/converters/KotlinToJavaConverter.kt
index 5112ae0b..0f7d5c7a 100644
--- a/plugins/kotlin-as-java/src/main/kotlin/converters/KotlinToJavaConverter.kt
+++ b/plugins/kotlin-as-java/src/main/kotlin/converters/KotlinToJavaConverter.kt
@@ -23,6 +23,13 @@ private fun <T : WithSources> List<T>.groupedByLocation() =
             } // TODO: first() does not look reasonable
         }) { it.second }
 
+private val DProperty.isConst: Boolean
+    get() = extra[AdditionalModifiers]
+        ?.content
+        ?.any { (_, modifiers) ->
+            ExtraModifiers.KotlinOnlyModifiers.Const in modifiers
+        } == true
+
 internal fun DPackage.asJava(): DPackage {
     @Suppress("UNCHECKED_CAST")
     val syntheticClasses = ((properties + functions) as List<WithSources>)
@@ -31,10 +38,12 @@ internal fun DPackage.asJava(): DPackage {
             DClass(
                 dri = dri.withClass(syntheticClassName),
                 name = syntheticClassName,
-                properties = nodes.filterIsInstance<DProperty>().map { it.asJava() },
+                properties = nodes.filterIsInstance<DProperty>().map { it.asJava(true) },
                 constructors = emptyList(),
                 functions = (
-                        nodes.filterIsInstance<DProperty>()
+                        nodes
+                            .filterIsInstance<DProperty>()
+                            .filterNot { it.isConst }
                             .flatMap { it.javaAccessors() } +
                                 nodes.filterIsInstance<DFunction>()
                                     .map { it.asJava(syntheticClassName) }), // TODO: methods are static and receiver is a param
@@ -71,7 +80,13 @@ internal fun DProperty.asJava(isTopLevel: Boolean = false, relocateToClass: Stri
             dri.withClass(relocateToClass)
         },
         modifier = javaModifierFromSetter(),
-        visibility = visibility.mapValues { it.value.propertyVisibilityAsJava() },
+        visibility = visibility.mapValues {
+            if (isTopLevel && isConst) {
+                JavaVisibility.Public
+            } else {
+                it.value.propertyVisibilityAsJava()
+            }
+        },
         type = type.asJava(), // TODO: check
         setter = null,
         getter = null, // Removing getters and setters as they will be available as functions
diff --git a/plugins/kotlin-as-java/src/test/kotlin/KotlinAsJavaPluginTest.kt b/plugins/kotlin-as-java/src/test/kotlin/KotlinAsJavaPluginTest.kt
index 7def1111..5430ea88 100644
--- a/plugins/kotlin-as-java/src/test/kotlin/KotlinAsJavaPluginTest.kt
+++ b/plugins/kotlin-as-java/src/test/kotlin/KotlinAsJavaPluginTest.kt
@@ -8,6 +8,7 @@ import org.junit.jupiter.api.Test
 import matchers.content.*
 import org.jetbrains.dokka.DokkaConfiguration
 import org.jetbrains.dokka.jdk
+import org.junit.Assert
 import signatures.renderedContent
 import signatures.signature
 import utils.A
@@ -372,6 +373,37 @@ class KotlinAsJavaPluginTest : BaseAbstractTest() {
             }
         }
     }
+
+    @Test
+    fun `const in top level`() {
+        val writerPlugin = TestOutputWriterPlugin()
+        val configuration = dokkaConfiguration {
+            sourceSets {
+                sourceSet {
+                    sourceRoots = listOf("src/")
+                    externalDocumentationLinks = listOf(
+                        DokkaConfiguration.ExternalDocumentationLink.jdk(8),
+                        stdlibExternalDocumentationLink
+                    )
+                }
+            }
+        }
+        testInline(
+            """
+            |/src/main/kotlin/kotlinAsJavaPlugin/Test.kt
+            |package kotlinAsJavaPlugin
+            |
+            |const val FIRST = "String"
+        """.trimMargin(),
+            configuration,
+            pluginOverrides = listOf(writerPlugin),
+            cleanupOutput = true
+        ) {
+            renderingStage = { _, _ ->
+                Assert.assertNull(writerPlugin.writer.contents["root/kotlinAsJavaPlugin/-test-kt/get-f-i-r-s-t.html"])
+            }
+        }
+    }
 }
 
 private val ContentNode.mainContents: List<ContentNode>