Update from Google.
--
MOE_MIGRATED_REVID=85702957
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/ContainingPackageLookupFunction.java b/src/main/java/com/google/devtools/build/lib/skyframe/ContainingPackageLookupFunction.java
new file mode 100644
index 0000000..58cb67d
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/ContainingPackageLookupFunction.java
@@ -0,0 +1,55 @@
+// Copyright 2014 Google Inc. 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.packages.PackageIdentifier;
+import com.google.devtools.build.lib.vfs.PathFragment;
+import com.google.devtools.build.skyframe.SkyFunction;
+import com.google.devtools.build.skyframe.SkyKey;
+import com.google.devtools.build.skyframe.SkyValue;
+
+import javax.annotation.Nullable;
+
+/**
+ * SkyFunction for {@link ContainingPackageLookupValue}s.
+ */
+public class ContainingPackageLookupFunction implements SkyFunction {
+
+ @Override
+ public SkyValue compute(SkyKey skyKey, Environment env) {
+ PackageIdentifier dir = (PackageIdentifier) skyKey.argument();
+ PackageLookupValue pkgLookupValue = null;
+ pkgLookupValue = (PackageLookupValue) env.getValue(PackageLookupValue.key(dir));
+ if (pkgLookupValue == null) {
+ return null;
+ }
+
+ if (pkgLookupValue.packageExists()) {
+ return ContainingPackageLookupValue.withContainingPackage(dir, pkgLookupValue.getRoot());
+ }
+
+ PathFragment parentDir = dir.getPackageFragment().getParentDirectory();
+ if (parentDir == null) {
+ return ContainingPackageLookupValue.noContainingPackage();
+ }
+ PackageIdentifier parentId = new PackageIdentifier(dir.getRepository(), parentDir);
+ return env.getValue(ContainingPackageLookupValue.key(parentId));
+ }
+
+ @Nullable
+ @Override
+ public String extractTag(SkyKey skyKey) {
+ return null;
+ }
+}
