Make AutoValue processors generate valid code if @Generated is not available.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=170487026

1 files changed, 10 insertions, 1 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 4990a605..4a7780db 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
@@ -171,7 +171,7 @@ public class AutoAnnotationProcessor extends AbstractProcessor {
     vars.annotationName = typeSimplifier.simplify(annotationElement.asType());
     vars.className = generatedClassName;
     vars.imports = typeSimplifier.typesToImport();
-    vars.generated = typeSimplifier.simplify(getTypeMirror(Generated.class));
+    vars.generated = getGeneratedTypeName(typeSimplifier);
     vars.arrays = typeSimplifier.simplify(getTypeMirror(Arrays.class));
     vars.members = members;
     vars.params = parameters;
@@ -190,6 +190,15 @@ public class AutoAnnotationProcessor extends AbstractProcessor {
     writeSourceFile(fullName, text, methodClass);
   }
 
+  private String getGeneratedTypeName(TypeSimplifier typeSimplifier) {
+    TypeElement generatedTypeElement =
+        processingEnv.getElementUtils().getTypeElement("javax.annotation.Generated");
+    if (generatedTypeElement == null) {
+      return "";
+    }
+    return typeSimplifier.simplify(generatedTypeElement.asType());
+  }
+
   /**
    * Returns the hashCode of the given AnnotationValue, if that hashCode is guaranteed to be always
    * the same. The hashCode of a String or primitive type never changes. The hashCode of a Class