1 files changed, 42 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/rules/android/MergableAndroidData.java b/src/main/java/com/google/devtools/build/lib/rules/android/MergableAndroidData.java
new file mode 100644
index 0000000000..47e162067a
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/rules/android/MergableAndroidData.java
@@ -0,0 +1,42 @@
+// Copyright 2018 The Bazel Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package com.google.devtools.build.lib.rules.android;
+
+import com.google.common.collect.ImmutableList;
+import com.google.devtools.build.lib.actions.Artifact;
+import com.google.devtools.build.lib.cmdline.Label;
+import com.google.devtools.build.lib.vfs.PathFragment;
+
+/**
+ * Interface used to indicate a container for resources, assets, or both can be merged.
+ *
+ * <p>Currently, resources and assets invoke the same action for merging, so virtually all the code
+ * to generate that action is identical. Implementing this interface allows it to be reused.
+ */
+public interface MergableAndroidData {
+
+  /** @return the roots of all resources to be merged */
+  default ImmutableList<PathFragment> getResourceRoots() {
+    return ImmutableList.of();
+  }
+
+  /** @return the roots of all assets to be merged */
+  default ImmutableList<PathFragment> getAssetRoots() {
+    return ImmutableList.of();
+  }
+
+  Label getLabel();
+
+  Artifact getSymbols();
+}