Introduce CompositeRunfilesSupplier
A convenience used to compose RunfilesSuppliers without having to
deconstruct them.
--
MOS_MIGRATED_REVID=95854609
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/CompositeRunfilesSupplier.java b/src/main/java/com/google/devtools/build/lib/analysis/CompositeRunfilesSupplier.java
new file mode 100644
index 0000000..51307b8
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/analysis/CompositeRunfilesSupplier.java
@@ -0,0 +1,63 @@
+// Copyright 2015 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.base.Preconditions;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Maps;
+import com.google.devtools.build.lib.actions.Artifact;
+import com.google.devtools.build.lib.actions.RunfilesSupplier;
+import com.google.devtools.build.lib.vfs.PathFragment;
+
+import java.io.IOException;
+import java.util.Map;
+
+/** RunfilesSupplier implementation composing instances. */
+public class CompositeRunfilesSupplier implements RunfilesSupplier {
+
+ private final RunfilesSupplier first;
+ private final RunfilesSupplier second;
+
+ /** Create an instance with {@code first} taking precedence over {@code second}. */
+ public CompositeRunfilesSupplier(RunfilesSupplier first, RunfilesSupplier second) {
+ this.first = Preconditions.checkNotNull(first);
+ this.second = Preconditions.checkNotNull(second);
+ }
+
+ @Override
+ public Iterable<Artifact> getArtifacts() {
+ ImmutableSet.Builder<Artifact> result = ImmutableSet.builder();
+ result.addAll(first.getArtifacts());
+ result.addAll(second.getArtifacts());
+ return result.build();
+ }
+
+ @Override
+ public ImmutableSet<PathFragment> getRunfilesDirs() {
+ ImmutableSet.Builder<PathFragment> result = ImmutableSet.builder();
+ result.addAll(first.getRunfilesDirs());
+ result.addAll(second.getRunfilesDirs());
+ return result.build();
+ }
+
+ @Override
+ public ImmutableMap<PathFragment, Map<PathFragment, Artifact>> getMappings() throws IOException {
+ Map<PathFragment, Map<PathFragment, Artifact>> result = Maps.newHashMap();
+ result.putAll(second.getMappings());
+ result.putAll(first.getMappings());
+ return ImmutableMap.copyOf(result);
+ }
+}
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/FilesToRunProvider.java b/src/main/java/com/google/devtools/build/lib/analysis/FilesToRunProvider.java
index c915cae..216a782 100644
--- a/src/main/java/com/google/devtools/build/lib/analysis/FilesToRunProvider.java
+++ b/src/main/java/com/google/devtools/build/lib/analysis/FilesToRunProvider.java
@@ -16,6 +16,8 @@
import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.actions.Artifact;
+import com.google.devtools.build.lib.actions.EmptyRunfilesSupplier;
+import com.google.devtools.build.lib.actions.RunfilesSupplier;
import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
import com.google.devtools.build.lib.syntax.Label;
@@ -84,4 +86,13 @@
@Nullable public Artifact getRunfilesManifest() {
return runfilesSupport != null ? runfilesSupport.getRunfilesManifest() : null;
}
+
+ /** Return a {@link RunfilesSupplier} encapsulating runfiles for this tool. */
+ public RunfilesSupplier getRunfilesSupplier() {
+ if (executable != null && runfilesSupport != null) {
+ return new RunfilesSupplierImpl(executable, runfilesSupport.getRunfiles());
+ } else {
+ return EmptyRunfilesSupplier.INSTANCE;
+ }
+ }
}
