Merge pull request #10129 from tamasvajk/kotlin-fix-comment-type-alias

Kotlin: Extract type alias doc comments

java/kotlin-extractor/src/main/kotlin/KotlinFileExtractor.kt

@@ -170,6 +170,7 @@ open class KotlinFileExtractor(
             is IrProperty -> return getPropertyLabel(element)
             is IrField -> return getFieldLabel(element)
             is IrEnumEntry -> return getEnumEntryLabel(element)
+            is IrTypeAlias -> return getTypeAliasLabel(element)
 
             // Fresh entities:
             is IrBody -> return null

java/kotlin-extractor/src/main/kotlin/KotlinUsesExtractor.kt

@@ -1574,7 +1574,7 @@ open class KotlinUsesExtractor(
     fun useEnumEntry(ee: IrEnumEntry): Label<out DbField> =
         tw.getLabelFor(getEnumEntryLabel(ee))
 
-    private fun getTypeAliasLabel(ta: IrTypeAlias): String {
+    fun getTypeAliasLabel(ta: IrTypeAlias): String {
         val parentId = useDeclarationParent(ta.parent, true)
         return "@\"type_alias;{$parentId};${ta.name.asString()}\""
     }

java/ql/test/kotlin/library-tests/comments/comments.expected

@@ -8,6 +8,7 @@ comments
 | comments.kt:35:5:35:34 | /** Medium is in the middle */ | /** Medium is in the middle */ |
 | comments.kt:37:5:37:23 | /** This is high */ | /** This is high */ |
 | comments.kt:42:5:44:6 | /**\n     * A variable.\n    */ | /**\n     * A variable.\n    */ |
+| comments.kt:48:1:50:3 | /**\n * A type alias comment\n */ | /**\n * A type alias comment\n */ |
 commentOwners
 | comments.kt:4:1:11:3 | /**\n * A group of *members*.\n *\n * This class has no useful logic; it's just a documentation example.\n *\n * @property name the name of this group.\n * @constructor Creates an empty group.\n */ | comments.kt:12:1:31:1 | Group |
 | comments.kt:4:1:11:3 | /**\n * A group of *members*.\n *\n * This class has no useful logic; it's just a documentation example.\n *\n * @property name the name of this group.\n * @constructor Creates an empty group.\n */ | comments.kt:12:1:31:1 | Group |
@@ -18,6 +19,7 @@ commentOwners
 | comments.kt:35:5:35:34 | /** Medium is in the middle */ | comments.kt:36:5:36:14 | Medium |
 | comments.kt:37:5:37:23 | /** This is high */ | comments.kt:38:5:38:11 | High |
 | comments.kt:42:5:44:6 | /**\n     * A variable.\n    */ | comments.kt:45:5:45:13 | int a |
+| comments.kt:48:1:50:3 | /**\n * A type alias comment\n */ | comments.kt:51:1:51:24 | MyType |
 commentSections
 | comments.kt:1:1:1:25 | /** Kdoc with no owner */ | Kdoc with no owner |
 | comments.kt:4:1:11:3 | /**\n * A group of *members*.\n *\n * This class has no useful logic; it's just a documentation example.\n *\n * @property name the name of this group.\n * @constructor Creates an empty group.\n */ | A group of *members*.\n\nThis class has no useful logic; it's just a documentation example.\n\n |
@@ -28,8 +30,10 @@ commentSections
 | comments.kt:35:5:35:34 | /** Medium is in the middle */ | Medium is in the middle |
 | comments.kt:37:5:37:23 | /** This is high */ | This is high |
 | comments.kt:42:5:44:6 | /**\n     * A variable.\n    */ | A variable. |
+| comments.kt:48:1:50:3 | /**\n * A type alias comment\n */ | A type alias comment |
 commentSectionContents
 | A group of *members*.\n\nThis class has no useful logic; it's just a documentation example.\n\n | A group of *members*.\n\nThis class has no useful logic; it's just a documentation example.\n\n |
+| A type alias comment | A type alias comment |
 | A variable. | A variable. |
 | Adds a [member] to this group.\n | Adds a [member] to this group.\n |
 | Creates an empty group. | Creates an empty group. |

java/ql/test/kotlin/library-tests/comments/comments.kt

@@ -44,3 +44,8 @@ fun fn1() {
     */
     val a = 1
 }
+
+/**
+ * A type alias comment
+ */
+typealias MyType = Group