1 files changed, 38 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/graph/LabelDeserializer.java b/src/main/java/com/google/devtools/build/lib/graph/LabelDeserializer.java
new file mode 100644
index 0000000000..2ae9f96906
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/graph/LabelDeserializer.java
@@ -0,0 +1,38 @@
+// 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.
+// All Rights Reserved.
+
+package com.google.devtools.build.lib.graph;
+
+/**
+ *  <p> An interface for specifying a graph label de-serialization
+ *  function. </p>
+ *
+ *  <p> Implementations should provide a means of mapping from the string
+ *  representation to an instance of the graph label type T. </p>
+ *
+ *  <p> e.g. to construct Digraph{Integer} from a String representation, the
+ *  LabelDeserializer{Integer} implementation would return
+ *  Integer.parseInt(rep). </p>
+ */
+public interface LabelDeserializer<T> {
+
+  /**
+   *  Returns an instance of the label object (of type T)
+   *  corresponding to serialized representation 'rep'.
+   *
+   *  @throws DotSyntaxException if 'rep' is invalid.
+   */
+  T deserialize(String rep) throws DotSyntaxException;
+}