1 files changed, 49 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/vfs/inmemoryfs/FileInfo.java b/src/main/java/com/google/devtools/build/lib/vfs/inmemoryfs/FileInfo.java
new file mode 100644
index 0000000000..fff562f97e
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/vfs/inmemoryfs/FileInfo.java
@@ -0,0 +1,49 @@
+// 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.vfs.inmemoryfs;
+
+import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe;
+import com.google.devtools.build.lib.util.Clock;
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+/**
+ * This interface represents a mutable file stored in an InMemoryFileSystem.
+ */
+@ThreadSafe
+public abstract class FileInfo extends InMemoryContentInfo {
+  protected FileInfo(Clock clock) {
+    super(clock);
+  }
+
+  @Override
+  public boolean isDirectory() {
+    return false;
+  }
+
+  @Override
+  public boolean isSymbolicLink() {
+    return false;
+  }
+
+  @Override
+  public boolean isFile() {
+    return true;
+  }
+
+  protected abstract byte[] readContent() throws IOException;
+
+  protected abstract OutputStream getOutputStream(boolean append) throws IOException;
+}