Generate annotations on enum entry constants in bytecode

#KT-5665 Fixed

compiler/backend/src/org/jetbrains/jet/codegen/ImplementationBodyCodegen.java

@@ -1615,9 +1615,10 @@ public class ImplementationBodyCodegen extends ClassBodyCodegen {
         if (declaration instanceof JetEnumEntry) {
             String name = declaration.getName();
             assert name != null : "Enum entry has no name: " + declaration.getText();
-            String desc = classAsmType.getDescriptor();
             ClassDescriptor entryDescriptor = bindingContext.get(BindingContext.CLASS, declaration);
-            v.newField(OtherOrigin(declaration, entryDescriptor), ACC_PUBLIC | ACC_ENUM | ACC_STATIC | ACC_FINAL, name, desc, null, null);
+            FieldVisitor fv = v.newField(OtherOrigin(declaration, entryDescriptor), ACC_PUBLIC | ACC_ENUM | ACC_STATIC | ACC_FINAL,
+                                         name, classAsmType.getDescriptor(), null, null);
+            AnnotationCodegen.forField(fv, typeMapper).genAnnotations(entryDescriptor, null);
             myEnumConstants.add((JetEnumEntry) declaration);
         }
 

compiler/testData/codegen/boxWithStdlib/annotations/annotatedEnumEntry.kt

@@ -0,0 +1,33 @@
+// KT-5665
+
+import java.lang.annotation.*
+
+Retention(RetentionPolicy.RUNTIME)
+annotation class First
+
+Retention(RetentionPolicy.RUNTIME)
+annotation class Second(val value: String)
+
+enum class E {
+    [First]
+    E1 {
+        fun foo() = "something"
+    }
+
+    [Second("OK")]
+    E2
+}
+
+fun box(): String {
+    val e = javaClass<E>()
+
+    val e1 = e.getDeclaredField(E.E1.toString()).getAnnotations()
+    if (e1.size != 1) return "Fail E1 size: ${e1.toList()}"
+    if (e1[0].annotationType() != javaClass<First>()) return "Fail E1: ${e1.toList()}"
+
+    val e2 = e.getDeclaredField(E.E2.toString()).getAnnotations()
+    if (e2.size != 1) return "Fail E2 size: ${e2.toList()}"
+    if (e2[0].annotationType() != javaClass<Second>()) return "Fail E2: ${e2.toList()}"
+
+    return (e2[0] as Second).value
+}

compiler/tests/org/jetbrains/jet/codegen/generated/BlackBoxWithStdlibCodegenTestGenerated.java

@@ -43,6 +43,11 @@ public class BlackBoxWithStdlibCodegenTestGenerated extends AbstractBlackBoxCode
             JetTestUtils.assertAllTestsPresentByMetadata(this.getClass(), "org.jetbrains.jet.generators.tests.TestsPackage", new File("compiler/testData/codegen/boxWithStdlib/annotations"), Pattern.compile("^(.+)\\.kt$"), true);
         }
         
+        @TestMetadata("annotatedEnumEntry.kt")
+        public void testAnnotatedEnumEntry() throws Exception {
+            doTestWithStdlib("compiler/testData/codegen/boxWithStdlib/annotations/annotatedEnumEntry.kt");
+        }
+        
         @TestMetadata("defaultParameterValues.kt")
         public void testDefaultParameterValues() throws Exception {
             doTestWithStdlib("compiler/testData/codegen/boxWithStdlib/annotations/defaultParameterValues.kt");