1 files changed, 103 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/ExtraActionArtifactsProvider.java b/src/main/java/com/google/devtools/build/lib/analysis/ExtraActionArtifactsProvider.java
new file mode 100644
index 0000000000..05b5f37703
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+++ b/src/main/java/com/google/devtools/build/lib/analysis/ExtraActionArtifactsProvider.java
@@ -0,0 +1,103 @@
+// 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.analysis;
+
+import com.google.common.collect.ImmutableList;
+import com.google.devtools.build.lib.actions.Artifact;
+import com.google.devtools.build.lib.collect.nestedset.NestedSet;
+import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;
+import com.google.devtools.build.lib.collect.nestedset.Order;
+import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
+import com.google.devtools.build.lib.syntax.Label;
+
+/**
+ * A {@link TransitiveInfoProvider} that creates extra actions.
+ */
+@Immutable
+public final class ExtraActionArtifactsProvider implements TransitiveInfoProvider {
+  public static final ExtraActionArtifactsProvider EMPTY =
+      new ExtraActionArtifactsProvider(
+          ImmutableList.<Artifact>of(),
+          NestedSetBuilder.<ExtraArtifactSet>emptySet(Order.STABLE_ORDER));
+
+  /**
+   * The set of extra artifacts provided by a single configured target.
+   */
+  @Immutable
+  public static final class ExtraArtifactSet {
+    private final Label label;
+    private final ImmutableList<Artifact> artifacts;
+
+    private ExtraArtifactSet(Label label, Iterable<Artifact> artifacts) {
+      this.label = label;
+      this.artifacts = ImmutableList.copyOf(artifacts);
+    }
+
+    public Label getLabel() {
+      return label;
+    }
+
+    public ImmutableList<Artifact> getArtifacts() {
+      return artifacts;
+    }
+
+    public static ExtraArtifactSet of(Label label, Iterable<Artifact> artifacts) {
+      return new ExtraArtifactSet(label, artifacts);
+    }
+
+    @Override
+    public int hashCode() {
+      return label.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object other) {
+      if (other == this) {
+        return true;
+      }
+
+      if (!(other instanceof ExtraArtifactSet)) {
+        return false;
+      }
+
+      return label.equals(((ExtraArtifactSet) other).getLabel());
+    }
+  }
+
+  /** The outputs of the extra actions associated with this target. */
+  private ImmutableList<Artifact> extraActionArtifacts = ImmutableList.of();
+  private NestedSet<ExtraArtifactSet> transitiveExtraActionArtifacts =
+      NestedSetBuilder.emptySet(Order.STABLE_ORDER);
+
+  public ExtraActionArtifactsProvider(ImmutableList<Artifact> extraActionArtifacts,
+      NestedSet<ExtraArtifactSet> transitiveExtraActionArtifacts) {
+    this.extraActionArtifacts = extraActionArtifacts;
+    this.transitiveExtraActionArtifacts = transitiveExtraActionArtifacts;
+  }
+
+  /**
+   * The outputs of the extra actions associated with this target.
+   */
+  public ImmutableList<Artifact> getExtraActionArtifacts() {
+    return extraActionArtifacts;
+  }
+
+  /**
+   * The outputs of the extra actions in the whole transitive closure.
+   */
+  public NestedSet<ExtraArtifactSet> getTransitiveExtraActionArtifacts() {
+    return transitiveExtraActionArtifacts;
+  }
+}