Fix source link to the line with name

plugins/base/src/main/kotlin/transformers/pages/sourcelinks/SourceLinksTransformer.kt

@@ -2,6 +2,7 @@ package org.jetbrains.dokka.base.transformers.pages.sourcelinks
 
 import com.intellij.psi.PsiDocumentManager
 import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiIdentifier
 import org.jetbrains.dokka.DokkaConfiguration
 import org.jetbrains.dokka.DokkaConfiguration.DokkaSourceSet
 import org.jetbrains.dokka.analysis.DescriptorDocumentableSource
@@ -16,6 +17,8 @@ import org.jetbrains.dokka.plugability.plugin
 import org.jetbrains.dokka.plugability.querySingle
 import org.jetbrains.dokka.transformers.pages.PageTransformer
 import org.jetbrains.kotlin.descriptors.DeclarationDescriptorWithSource
+import org.jetbrains.kotlin.lexer.KtTokens
+import org.jetbrains.kotlin.psi.psiUtil.getChildOfType
 import org.jetbrains.kotlin.resolve.source.getPsi
 import org.jetbrains.kotlin.utils.addToStdlib.cast
 import java.io.File
@@ -92,8 +95,10 @@ class SourceLinksTransformer(val context: DokkaContext) : PageTransformer {
     }
 
     private fun PsiElement.lineNumber(): Int? {
+        val ktIdentifierTextRange = this.node?.findChildByType(KtTokens.IDENTIFIER)?.textRange
+        val javaIdentifierTextRange = this.getChildOfType<PsiIdentifier>()?.textRange
         // synthetic and some light methods might return null
-        val textRange = textRange ?: return null
+        val textRange = ktIdentifierTextRange ?: javaIdentifierTextRange ?: textRange ?: return null
 
         val doc = PsiDocumentManager.getInstance(project).getDocument(containingFile)
         // IJ uses 0-based line-numbers; external source browsers use 1-based

plugins/base/src/test/kotlin/enums/JavaEnumsTest.kt

@@ -47,6 +47,9 @@ class JavaEnumsTest : BaseAbstractTest() {
             |/src/main/java/basic/JavaEnum.java
             |package testpackage
             |
+            |/**
+            |* doc
+            |*/
             |public enum JavaEnum {
             |    ONE, TWO, THREE
             |}
@@ -62,7 +65,7 @@ class JavaEnumsTest : BaseAbstractTest() {
 
 
                 assertEquals(
-                    "https://github.com/user/repo/tree/master/src/main/java/basic/JavaEnum.java#L3",
+                    "https://github.com/user/repo/tree/master/src/main/java/basic/JavaEnum.java#L6",
                     sourceLink
                 )
             }

plugins/base/src/test/kotlin/enums/KotlinEnumsTest.kt

@@ -398,6 +398,9 @@ class KotlinEnumsTest : BaseAbstractTest() {
             |/src/main/kotlin/basic/KotlinEnum.kt
             |package testpackage
             |
+            |/**
+            |* Doc
+            |*/
             |enum class KotlinEnum {
             |    ONE, TWO, THREE
             |}
@@ -412,7 +415,7 @@ class KotlinEnumsTest : BaseAbstractTest() {
                     .attr("href")
 
                 assertEquals(
-                    "https://github.com/user/repo/tree/master/src/main/kotlin/basic/KotlinEnum.kt#L3",
+                    "https://github.com/user/repo/tree/master/src/main/kotlin/basic/KotlinEnum.kt#L6",
                     sourceLink
                 )
             }

plugins/base/src/test/kotlin/transformers/SourceLinkTransformerTest.kt

@@ -0,0 +1,67 @@
+package transformers
+
+import org.jetbrains.dokka.SourceLinkDefinitionImpl
+import org.jetbrains.dokka.base.testApi.testRunner.BaseAbstractTest
+import org.junit.jupiter.api.Test
+import signatures.renderedContent
+import utils.TestOutputWriterPlugin
+import java.net.URL
+import kotlin.test.assertEquals
+import org.jsoup.nodes.Element
+
+class SourceLinkTransformerTest : BaseAbstractTest() {
+
+    private fun Element.getSourceLink() = select(".symbol .floating-right")
+        .select("a[href]")
+        .attr("href")
+
+    @Test
+    fun `source link should lead to name`() {
+        val configuration = dokkaConfiguration {
+            sourceSets {
+                sourceSet {
+                    sourceRoots = listOf("src/")
+                    sourceLinks = listOf(
+                        SourceLinkDefinitionImpl(
+                            localDirectory = "src/main/kotlin",
+                            remoteUrl = URL("https://github.com/user/repo/tree/master/src/main/kotlin"),
+                            remoteLineSuffix = "#L"
+                        )
+                    )
+                }
+            }
+        }
+
+        val writerPlugin = TestOutputWriterPlugin()
+
+        testInline(
+            """
+            |/src/main/kotlin/basic/Deprecated.kt
+            |package testpackage
+            |
+            |/**
+            |* Marks the annotated declaration as deprecated. ...
+            |*/
+            |@Target(CLASS, FUNCTION, PROPERTY, ANNOTATION_CLASS, CONSTRUCTOR, PROPERTY_SETTER, PROPERTY_GETTER, TYPEALIAS)
+            |@MustBeDocumented
+            |public annotation class Deprecated(
+            |    val message: String,
+            |    val replaceWith: ReplaceWith = ReplaceWith(""),
+            |    val level: DeprecationLevel = DeprecationLevel.WARNING
+            |)
+        """.trimMargin(),
+            configuration,
+            pluginOverrides = listOf(writerPlugin)
+        ) {
+            renderingStage = { _, _ ->
+                val page = writerPlugin.writer.renderedContent("root/testpackage/-deprecated/index.html")
+                val sourceLink = page.getSourceLink()
+
+                assertEquals(
+                    "https://github.com/user/repo/tree/master/src/main/kotlin/basic/Deprecated.kt#L8",
+                    sourceLink
+                )
+            }
+        }
+    }
+}