1 files changed, 39 insertions, 0 deletions
diff --git a/bundle-plugin/src/main/scala/com/yahoo/container/plugin/classanalysis/AnnotationVisitorTrait.scala b/bundle-plugin/src/main/scala/com/yahoo/container/plugin/classanalysis/AnnotationVisitorTrait.scala
new file mode 100644
index 00000000000..8beb47c765f
--- /dev/null
+++ b/bundle-plugin/src/main/scala/com/yahoo/container/plugin/classanalysis/AnnotationVisitorTrait.scala
@@ -0,0 +1,39 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.container.plugin.classanalysis
+
+import org.objectweb.asm.{Opcodes, AnnotationVisitor, Type}
+
+/**
+ * Picks up classes used in annotations.
+ * @author  tonytv
+ */
+private trait AnnotationVisitorTrait {
+  protected val imports: ImportsSet
+
+  def visitAnnotation(desc: String, visible: Boolean): AnnotationVisitor = {
+    imports ++= getClassName(Type.getType(desc)).toList
+
+    visitAnnotationDefault()
+  }
+
+  def visitAnnotationDefault(): AnnotationVisitor =
+    new AnnotationVisitor(Opcodes.ASM5) {
+      override def visit(name: String, value: AnyRef) {}
+
+      override def visitEnum(name: String, desc: String, value: String) {
+        imports ++= getClassName(Type.getType(desc)).toList
+      }
+
+      override def visitArray(name: String): AnnotationVisitor = this
+
+      override def visitAnnotation(name: String, desc: String): AnnotationVisitor = {
+        imports ++= getClassName(Type.getType(desc)).toList
+        this
+      }
+
+      override def visitEnd() {}
+    }
+
+  def visitParameterAnnotation(parameter: Int, desc: String, visible: Boolean): AnnotationVisitor =
+    visitAnnotation(desc, visible)
+}