1 files changed, 92 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/actions/TreeArtifactFile.java b/src/main/java/com/google/devtools/build/lib/actions/TreeArtifactFile.java
new file mode 100644
index 0000000000..8b4cde81d7
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/actions/TreeArtifactFile.java
@@ -0,0 +1,92 @@
+// Copyright 2016 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.actions;
+
+import com.google.devtools.build.lib.util.Preconditions;
+import com.google.devtools.build.lib.vfs.Path;
+import com.google.devtools.build.lib.vfs.PathFragment;
+
+/** An ArtifactFile implementation for descendants of TreeArtifacts. */
+final class TreeArtifactFile implements ArtifactFile {
+  private final Artifact parent;
+  private final PathFragment parentRelativePath;
+
+  TreeArtifactFile(Artifact parent, PathFragment parentRelativePath) {
+    Preconditions.checkArgument(parent.isTreeArtifact(), "%s must be a TreeArtifact", parent);
+    this.parent = parent;
+    this.parentRelativePath = parentRelativePath;
+  }
+
+  @Override
+  public PathFragment getExecPath() {
+    return parent.getExecPath().getRelative(parentRelativePath);
+  }
+
+  @Override
+  public PathFragment getParentRelativePath() {
+    return parentRelativePath;
+  }
+
+  @Override
+  public Path getPath() {
+    return parent.getPath().getRelative(parentRelativePath);
+  }
+
+  @Override
+  public PathFragment getRootRelativePath() {
+    return parent.getRootRelativePath().getRelative(parentRelativePath);
+  }
+
+  @Override
+  public Root getRoot() {
+    return parent.getRoot();
+  }
+
+  @Override
+  public Artifact getParent() {
+    return parent;
+  }
+
+  @Override
+  public String prettyPrint() {
+    return getRootRelativePath().toString();
+  }
+
+  @Override
+  public String getExecPathString() {
+    return getExecPath().toString();
+  }
+
+  @Override
+  public String toString() {
+    return "ArtifactFile:[" + parent.toDetailString() + "]" + parentRelativePath;
+  }
+
+  @Override
+  public boolean equals(Object other) {
+    if (!(other instanceof ArtifactFile)) {
+      return false;
+    }
+
+    ArtifactFile that = (ArtifactFile) other;
+    return this.getParent().equals(that.getParent())
+        && this.getParentRelativePath().equals(that.getParentRelativePath());
+  }
+
+  @Override
+  public int hashCode() {
+    return getParent().hashCode() * 257 + getParentRelativePath().hashCode();
+  }
+}