Add java.lang.Enum ordinal and name accessors to special-cased JVM names

Kotlin represents these as read-only properties with unusual getter names.

Author: smowton

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

@@ -85,7 +85,11 @@ open class KotlinUsesExtractor(
         makeDescription(StandardNames.FqNames.map, "<get-entries>") to "entrySet",
         makeDescription(FqName("java.util.Map"), "<get-entries>") to "entrySet",
         makeDescription(StandardNames.FqNames.mutableList, "removeAt") to "remove",
-        makeDescription(FqName("java.util.List"), "removeAt") to "remove"
+        makeDescription(FqName("java.util.List"), "removeAt") to "remove",
+        makeDescription(StandardNames.FqNames._enum.toSafe(), "<get-ordinal>") to "ordinal",
+        makeDescription(FqName("java.lang.Enum"), "<get-ordinal>") to "ordinal",
+        makeDescription(StandardNames.FqNames._enum.toSafe(), "<get-name>") to "name",
+        makeDescription(FqName("java.lang.Enum"), "<get-name>") to "name",
     )
 
     private val specialFunctionShortNames = specialFunctions.keys.map { it.functionName }.toSet()

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

@@ -0,0 +1 @@
+fun usesEnum(e: Enum<*>) = e.ordinal.toString() + e.name

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

@@ -0,0 +1,27 @@
+| addAll |
+| addRange |
+| allOf |
+| asIterator |
+| clone |
+| compareTo |
+| complement |
+| complementOf |
+| copyOf |
+| describeConstable |
+| equals |
+| finalize |
+| getDeclaringClass |
+| hasMoreElements |
+| hashCode |
+| name |
+| nextElement |
+| noneOf |
+| of |
+| ordinal |
+| range |
+| resolveConstantDesc |
+| toString |
+| typeCheck |
+| usesEnum |
+| valueOf |
+| writeReplace |

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

@@ -0,0 +1,5 @@
+import java
+
+from Method m
+where m.getDeclaringType().getName().matches("Enum%")
+select m.getName()