1 files changed, 68 insertions, 0 deletions
diff --git a/mobile/android/annotations/src/main/java/org/mozilla/gecko/annotationProcessors/classloader/AnnotatableEntity.java b/mobile/android/annotations/src/main/java/org/mozilla/gecko/annotationProcessors/classloader/AnnotatableEntity.java
new file mode 100644
index 0000000000..b2df6587c1
--- /dev/null
+++ b/mobile/android/annotations/src/main/java/org/mozilla/gecko/annotationProcessors/classloader/AnnotatableEntity.java
@@ -0,0 +1,68 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.gecko.annotationProcessors.classloader;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Member;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import org.mozilla.gecko.annotationProcessors.AnnotationInfo;
+
+/**
+ * Union type to hold either a method, field, or ctor. Allows us to iterate "The generatable stuff",
+ * despite the fact that such things can be of either flavour.
+ */
+public class AnnotatableEntity {
+  public enum ENTITY_TYPE {
+    METHOD,
+    NATIVE,
+    FIELD,
+    CONSTRUCTOR
+  }
+
+  private final Member mMember;
+  public final ENTITY_TYPE mEntityType;
+
+  public final AnnotationInfo mAnnotationInfo;
+
+  public AnnotatableEntity(Member aObject, AnnotationInfo aAnnotationInfo) {
+    mMember = aObject;
+    mAnnotationInfo = aAnnotationInfo;
+
+    if (aObject instanceof Method) {
+      if (Modifier.isNative(aObject.getModifiers())) {
+        mEntityType = ENTITY_TYPE.NATIVE;
+      } else {
+        mEntityType = ENTITY_TYPE.METHOD;
+      }
+    } else if (aObject instanceof Field) {
+      mEntityType = ENTITY_TYPE.FIELD;
+    } else {
+      mEntityType = ENTITY_TYPE.CONSTRUCTOR;
+    }
+  }
+
+  public Method getMethod() {
+    if (mEntityType != ENTITY_TYPE.METHOD && mEntityType != ENTITY_TYPE.NATIVE) {
+      throw new UnsupportedOperationException("Attempt to cast to unsupported member type.");
+    }
+    return (Method) mMember;
+  }
+
+  public Field getField() {
+    if (mEntityType != ENTITY_TYPE.FIELD) {
+      throw new UnsupportedOperationException("Attempt to cast to unsupported member type.");
+    }
+    return (Field) mMember;
+  }
+
+  public Constructor<?> getConstructor() {
+    if (mEntityType != ENTITY_TYPE.CONSTRUCTOR) {
+      throw new UnsupportedOperationException("Attempt to cast to unsupported member type.");
+    }
+    return (Constructor<?>) mMember;
+  }
+}