1 files changed, 38 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/ArtifactPathResolver.java b/src/main/java/com/google/devtools/build/lib/skyframe/ArtifactPathResolver.java
new file mode 100644
index 0000000000..9d0bf7651b
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/ArtifactPathResolver.java
@@ -0,0 +1,38 @@
+// 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.skyframe;
+
+import com.google.devtools.build.lib.actions.Artifact;
+import com.google.devtools.build.lib.vfs.Path;
+import com.google.devtools.build.lib.vfs.Root;
+
+/**
+ * An indirection layer on Path resolution of {@link Artifact} and {@link Root}.
+ */
+interface ArtifactPathResolver {
+  Path toPath(Artifact artifact);
+  Root transformRoot(Root root);
+
+  ArtifactPathResolver IDENTITY = new ArtifactPathResolver() {
+    @Override
+    public Path toPath(Artifact artifact) {
+      return artifact.getPath();
+    }
+
+    @Override
+    public Root transformRoot(Root root) {
+      return root;
+    }
+  };
+}