Merge pull request github#10675 from tamasvajk/kotlin-enum-constants

Kotlin: extract `isEnumConstant` relation

Author: tamasvajk

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

@@ -1161,6 +1161,7 @@ open class KotlinFileExtractor(
                 tw.writeFieldsKotlinType(id, type.kotlinResult.id)
                 val locId = tw.getLocation(ee)
                 tw.writeHasLocation(id, locId)
+                tw.writeIsEnumConst(id)
 
                 if (extractTypeAccess) {
                     val fieldDeclarationId = tw.getFreshIdLabel<DbFielddecl>()

java/ql/test/kotlin/library-tests/enum/enumUser.kt

@@ -1 +1,3 @@
 fun usesEnum(e: Enum<*>) = e.ordinal.toString() + e.name
+
+enum class E { A, B, C }

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

@@ -1,3 +1,8 @@
+enumConstants
+| enumUser.kt:3:16:3:17 | A |
+| enumUser.kt:3:19:3:20 | B |
+| enumUser.kt:3:22:3:22 | C |
+#select
 | addAll |
 | addRange |
 | allOf |

java/ql/test/kotlin/library-tests/enum/test.ql

@@ -3,3 +3,5 @@ import java
 from Method m
 where m.getDeclaringType().getName().matches("Enum%")
 select m.getName()
+
+query predicate enumConstants(EnumConstant ec) { ec.fromSource() }