Codec for FluentIterable - needed to serialize results of Iterables.concat.

PiperOrigin-RevId: 196127040

1 files changed, 51 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/serialization/FluentIterableCodec.java b/src/main/java/com/google/devtools/build/lib/skyframe/serialization/FluentIterableCodec.java
new file mode 100644
index 0000000000..13774bdfc6
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/serialization/FluentIterableCodec.java
@@ -0,0 +1,51 @@
+// Copyright 2018 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.skyframe.serialization;
+
+import com.google.common.collect.FluentIterable;
+import com.google.protobuf.CodedInputStream;
+import com.google.protobuf.CodedOutputStream;
+import java.io.IOException;
+
+/** An {@link ObjectCodec} for {@link FluentIterable}. */
+@SuppressWarnings("rawtypes") // Deliberate erasure of FluentIterable.
+final class FluentIterableCodec implements ObjectCodec<FluentIterable> {
+
+  @Override
+  public Class<FluentIterable> getEncodedClass() {
+    return FluentIterable.class;
+  }
+
+  @Override
+  public void serialize(
+      SerializationContext context, FluentIterable object, CodedOutputStream codedOut)
+      throws IOException, SerializationException {
+    codedOut.writeInt32NoTag(object.size());
+    for (Object obj : object) {
+      context.serialize(obj, codedOut);
+    }
+  }
+
+  @Override
+  public FluentIterable deserialize(DeserializationContext context, CodedInputStream codedIn)
+      throws IOException, SerializationException {
+    int size = codedIn.readInt32();
+    Object[] list = new Object[size];
+    for (int i = 0; i < size; ++i) {
+      list[i] = context.deserialize(codedIn);
+    }
+    return FluentIterable.from(list);
+  }
+}