From 2b720d044de32427a0d91a3af73e58338db29cb5 Mon Sep 17 00:00:00 2001
From: David Ostrovsky <david@ostrovsky.org>
Date: Fri, 8 Dec 2017 19:20:47 +0100
Subject: [PATCH] Prefer javax.annotation.processing.Generated on Java 9

Closes #560.
---
 .../value/processor/AutoAnnotationProcessor.java    | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/value/src/main/java/com/google/auto/value/processor/AutoAnnotationProcessor.java b/value/src/main/java/com/google/auto/value/processor/AutoAnnotationProcessor.java
index 4a7780db91..9f02a17701 100644
--- a/value/src/main/java/com/google/auto/value/processor/AutoAnnotationProcessor.java
+++ b/value/src/main/java/com/google/auto/value/processor/AutoAnnotationProcessor.java
@@ -17,6 +17,7 @@
 
 import static java.util.stream.Collectors.toCollection;
 
+import com.google.auto.common.GeneratedAnnotations;
 import com.google.auto.common.MoreElements;
 import com.google.auto.common.SuperficialValidation;
 import com.google.auto.service.AutoService;
@@ -35,7 +36,6 @@
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
-import javax.annotation.Generated;
 import javax.annotation.processing.AbstractProcessor;
 import javax.annotation.processing.ProcessingEnvironment;
 import javax.annotation.processing.Processor;
@@ -191,12 +191,12 @@ private void processMethod(ExecutableElement method) {
   }
 
   private String getGeneratedTypeName(TypeSimplifier typeSimplifier) {
-    TypeElement generatedTypeElement =
-        processingEnv.getElementUtils().getTypeElement("javax.annotation.Generated");
-    if (generatedTypeElement == null) {
+    Optional<TypeElement> generatedTypeElement =
+        GeneratedAnnotations.generatedAnnotation(processingEnv.getElementUtils());
+    if (!generatedTypeElement.isPresent()) {
       return "";
     }
-    return typeSimplifier.simplify(generatedTypeElement.asType());
+    return typeSimplifier.simplify(generatedTypeElement.get().asType());
   }
 
   /**
@@ -447,7 +447,8 @@ private Set<TypeMirror> getReferencedTypes(
       Set<Class<?>> wrapperTypesUsedInCollections) {
     Set<TypeMirror> types = new TypeMirrorSet();
     types.add(annotation);
-    types.add(getTypeMirror(Generated.class));
+    types.add(
+	GeneratedAnnotations.generatedAnnotation(processingEnv.getElementUtils()).get().asType());
     for (VariableElement parameter : method.getParameters()) {
       // Method parameter types are usually the same as annotation member types, but in the case of
       // List<Integer> for int[] we are referencing List.