1 files changed, 81 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/packages/PackageGroupsRuleVisibility.java b/src/main/java/com/google/devtools/build/lib/packages/PackageGroupsRuleVisibility.java
new file mode 100644
index 0000000000..70ffa114c8
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/packages/PackageGroupsRuleVisibility.java
@@ -0,0 +1,81 @@
+// 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.packages;
+
+import com.google.common.collect.ImmutableList;
+import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
+import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe;
+import com.google.devtools.build.lib.syntax.Label;
+
+import java.util.Collection;
+import java.util.List;
+
+/**
+ * A rule visibility that allows visibility to a list of package groups.
+ */
+@Immutable @ThreadSafe
+public class PackageGroupsRuleVisibility implements RuleVisibility {
+  public static final String PACKAGE_LABEL = "__pkg__";
+  public static final String SUBTREE_LABEL = "__subpackages__";
+  private final List<Label> packageGroups;
+  private final List<PackageSpecification> directPackages;
+  private final List<Label> declaredLabels;
+
+  public PackageGroupsRuleVisibility(List<Label> labels) {
+    declaredLabels = ImmutableList.copyOf(labels);
+    ImmutableList.Builder<PackageSpecification> directPackageBuilder = ImmutableList.builder();
+    ImmutableList.Builder<Label> packageGroupBuilder = ImmutableList.builder();
+
+    for (Label label : labels) {
+      PackageSpecification specification = PackageSpecification.fromLabel(label);
+      if (specification != null) {
+        directPackageBuilder.add(specification);
+      } else {
+        packageGroupBuilder.add(label);
+      }
+    }
+
+    packageGroups = packageGroupBuilder.build();
+    directPackages = directPackageBuilder.build();
+  }
+
+  public Collection<Label> getPackageGroups() {
+    return packageGroups;
+  }
+
+  public Collection<PackageSpecification> getDirectPackages() {
+    return directPackages;
+  }
+
+  @Override
+  public List<Label> getDependencyLabels() {
+    return packageGroups;
+  }
+
+  @Override
+  public List<Label> getDeclaredLabels() {
+    return declaredLabels;
+  }
+
+  /**
+   * Tries to parse a list of labels into a {@link PackageGroupsRuleVisibility}.
+   *
+   * @param labels the list of labels to parse
+   * @return The resulting visibility object. A list of labels can always be
+   * parsed into a PackageGroupsRuleVisibility.
+   */
+  public static PackageGroupsRuleVisibility tryParse(List<Label> labels) {
+    return new PackageGroupsRuleVisibility(labels);
+  }
+}